f Process of using metal-coated nanofibres By www.freepatentsonline.com Published On :: Tue, 24 Mar 2015 08:00:00 EDT The present invention relates to metal coated nano-fibres obtained by a process that includes electrospinning and to the use of said metal coated nano-fibres. The process is characterised in that a polymer nano-fibre with functional groups providing the binding ability to a reducing reagent is prepared by electrospinning at ambient conditions. Then this is contacted with a reducing agent, thereby opening the epoxy ring on the surface of polymer nano-fibre and replacing with the reducing agent and the reducing agent modified film is reacted with metal solution in alkaline media. Finally the electrospun mat is treated with water to open the epoxy rings in the structure and crosslinking the chains to provide integrity. Full Article
f Fructan-based epilatory compositions By www.freepatentsonline.com Published On :: Tue, 24 Mar 2015 08:00:00 EDT The invention relates to an epilatory mixture comprising a fructan, preferably inulin. Furthermore, an epilatory composition is disclosed comprising said epilatory effective mixture. Also a method of use of said epilatory composition of the invention for the removal of unwanted hair from the skin is disclosed, as well as a method of use of said composition for carrying out an epilatory treatment which can be carried out by a professional person as well as by a non-professional person. Full Article
f Disulfide dyes By www.freepatentsonline.com Published On :: Tue, 31 Mar 2015 08:00:00 EDT Disclosed are compounds of formula (1) or formula (2). The compounds are useful for the dyeing of organic materials, such as keratin fibers, wool, leather, silk, cellulose or polyamides, especially keratin-containing fibers, cotton or nylon, and preferably hair, more preferably human hair. (1) (2). A-(X1)p—(Csat)r—S—S—(Csat)q—(X2)p-D (1) Full Article
f Method for dyeing plastic lens By www.freepatentsonline.com Published On :: Tue, 31 Mar 2015 08:00:00 EDT A method of dyeing a plastic lens including applying a sublimation dye to a dyeing substrate, holding the dyeing substrate on a holding member, holding a plastic lens on the holding member at a position above the dyeing substrate, evacuating a vacuum vessel which accommodates the holding member, transferring the dyeing substrate from the holding member to a heating device provided in the vacuum vessel, so that the dyeing substrate is held to be heatable by the heating device, by vertically moving at least one of the holding member and the heating device, bringing the plastic lens in close proximity to the dyeing substrate by vertically moving at least one of the holding member and the heating device which holds the dyeing substrate, and dyeing the target surface of the plastic lens with the sublimation dye by sublimating the sublimation dye by heating the dyeing substrate using the heating device. Full Article
f Cellulose nanofiber, production method of same and cellulose nanofiber dispersion By www.freepatentsonline.com Published On :: Tue, 31 Mar 2015 08:00:00 EDT The cellulose nanofiber production method of the present invention comprises an oxidation treatment step for oxidizing native cellulose in a neutral or acidic reaction solution containing an N-oxyl compound and an oxidizing agent that oxidizes aldehyde groups, and a dispersion step for dispersing the native cellulose in a medium following the oxidation treatment step. According to the production method of the present invention, a cellulose nanofiber is provided that has long fibers and demonstrates high strength. Full Article
f Modified cellulose fibers and cellulose composite thereof By www.freepatentsonline.com Published On :: Tue, 31 Mar 2015 08:00:00 EDT An object of the invention is to provide cellulose fibers which can give a cellulose composite that renders high transparency, a reduction in linear expansion coefficient, and a high modulus of elasticity possible. The invention relates to: a process for producing modified cellulose fibers which includes a modification reaction step of reacting cellulose with an aromatic compound in an organic acid to thereby modify the cellulose with an aromatic-ring-containing substituent; cellulose fibers modified with aromatic-ring-containing substituent; a dispersion of the cellulose fibers; and a cellulose fiber composite obtained from the same. Full Article
f Functional additives for cleansing compositions By www.freepatentsonline.com Published On :: Tue, 31 Mar 2015 08:00:00 EDT Functional additives for cleansing compositions exhibiting enhanced anti soil-re-deposition and/or dye transfer inhibitory properties comprising polymers in the form of homopolymers, copolymers or terpolymers synthesized from at least one hydrophobic monomer. Examples of hydrophobic monomers include N-vinyl caprolactam, vinyl acetate, vinyl esters, acrylated glycols, methacrylamide, C1 to C12 alkyl- and C1 to C12 dialkylacrylamide, C1 to C12 alkyl- and C1 to C12 dialkylmethacrylamide, C1 to C12 alkyl aery late, C1 to C12 alkyl methacrylate, 4-butyl phenyl maleimide, octyl acrylamide. Full Article
f Method of controlling drainage of wash water remaining in a washing machine By www.freepatentsonline.com Published On :: Tue, 07 Apr 2015 08:00:00 EDT Disclosed herein is a method of controlling drainage of wash water remaining in a washing machine. The method includes draining wash water from a tub to an outside of the washing machine, supplying wash water into the washing machine after the draining wash water, and re-draining the wash water to the outside of the washing machine after the supplying wash water. Full Article
f Washing machine and control method thereof By www.freepatentsonline.com Published On :: Tue, 07 Apr 2015 08:00:00 EDT A washing machine and a control method thereof to achieve washing performance using bubbles without damage to fiber structures of functional clothes. When a washing course of functional clothes is selected, a motor is frequently rotated at a period of a predetermined time or less, causing the clothes to uniformly adsorb the water. Thereafter, bubbles are generated and applied to the clothes. A drive operation rate of the motor is raised stepwise to wash the clothes to which the bubbles have been applied, so as to effectively remove sweat, contaminants, or the like contained in the clothes. Full Article
f Method for washing and washing machine By www.freepatentsonline.com Published On :: Tue, 07 Apr 2015 08:00:00 EDT Provided is a method for washing laundry in a washing machine, wherein the washing machine includes a tub and a drum disposed inside the tub, the method comprising: supplying wash water into the tub; rotating the drum such that the laundry is attached the drum and spraying the wash water changed to whirling water into the drum; and draining the wash water from the tub. Full Article
f Process for obtaining an aged or faded effect on garments made of cashmere By www.freepatentsonline.com Published On :: Tue, 07 Apr 2015 08:00:00 EDT A process obtains an aged or faded effect on garments made of protein fibers such as wool, cashmere and silk. Granules of inert materials, which are particularly light in order not to damage very fine fibers, are introduced into a tumbler. The garments were previously treated with a chemical product commonly referred to as “dye retardant” for inhibiting dyeing of the fabric. The tumbler is pre-arranged so that the chemical product does not migrate through holes or openings. Raw confectioned garments that are to be treated, such as jerseys or outerwear, are introduced into the tumbler. The garments are extracted from the tumbler at the end of migration of the chemical product for inhibiting dyeing of the outer surface of the garments by the granules and steamed in an autoclave to fix the chemical process of the product for inhibiting dyeing of the outer surface of the garments. The garments are then dyed with a specific selection of dyes that must be defined each time according to the desired result. Full Article
f Mitigation of radiation induced attenuation By www.freepatentsonline.com Published On :: Tue, 07 Apr 2015 08:00:00 EDT A DTS system resistant to radiation induced attenuation losses during the service life of an installation at both low and high temperatures using matched multi-wavelength distributed temperature sensing automatic calibration technology in combination with designed Pure Silica Core (PSC) optical fibers and an in process photo bleaching method provided by the light sources of the distributed temperature sensing system. Full Article
f Drum type washing machine having touch up function and method for touching up thereof By www.freepatentsonline.com Published On :: Tue, 14 Apr 2015 08:00:00 EDT Disclosed is a drum type washing machine having a touch up function and a method for touching up thereof. The drum type washing machine having the touch up function is provided with a touch up button for removing wrinkles on laundry left in the drum type washing machine and a method for touching up. Accordingly, it is not required for a user to additionally execute rinsing and dehydrating processes, or ironing so as to remove wrinkles on the laundry, thus it is convenient. And, since it is not required to additionally execute the rinsing and dehydrating processes, it is capable of preventing unwanted consumption of water and electricity. Full Article
f Appliances with sudsing-reducing flushable detergent dispensers By www.freepatentsonline.com Published On :: Tue, 14 Apr 2015 08:00:00 EDT Appliances having a detergent dispenser that may be flushed with a water flow for removal of residual treating chemistry while reducing sudsing are disclosed. An example dispenser includes a cup with a bottom wall, a siphon tube projecting upwardly from the bottom wall, a cover for the siphon tube, an opening configured to introduce a liquid stream into the cup from a position above and beyond a periphery of the cover, wherein substantially all of the liquid stream flows downwardly along a trajectory defined by the opening and terminating below and within the periphery of the cover, and wherein the liquid stream directly impinges a portion of at least one of the cup or the siphon tube below the cover. Full Article
f Process for lightening keratin materials using an emulsion comprising an alkaline agent and an oxidizing composition By www.freepatentsonline.com Published On :: Tue, 28 Apr 2015 08:00:00 EDT The present disclosure therefore relates to a method for lightening keratin materials, in which the following are used: (a) a direct emulsion (A) comprising at least one fatty substance in an amount greater than 25% by weight, such as greater than 50%, at least one surfactant; at least one alkaline agent and an amount of water greater than 5% by weight, of the total weight of the emulsion, (b) a composition (B) comprising at least one oxidizing agent. It also relates to a multi-compartment device comprising, in one compartment, an emulsion (A), in another compartment a composition (B) comprising at least one oxidizing agent. Full Article
f Photoresist composition and method of forming a black matrix using the same By www.freepatentsonline.com Published On :: Tue, 28 Apr 2015 08:00:00 EDT A photoresist composition includes a binder resin combined with a black dye, a monomer, a photo-polymerization initiator and a remainder of a solvent. Full Article
f Bluing composition and method for treating textile articles using the same By www.freepatentsonline.com Published On :: Tue, 12 May 2015 08:00:00 EDT A bluing composition concentrate comprises an aqueous medium and at least one colorant that exhibits a blue or violet shade when deposited onto a textile material. The concentrate can be used to produce a bluing composition, and the bluing composition can be used to treat textile materials in such a way as to decrease the visually-perceived yellow coloration of textile articles that can occur with repeated use and laundering. Full Article
f Dye composition using a 2-hydroxynaphthalene, (acylamino)phenol or quinoline coupler in a fatty-substance-rich medium, dyeing process and device therefor By www.freepatentsonline.com Published On :: Tue, 12 May 2015 08:00:00 EDT The present invention relates to a cosmetic composition for dyeing keratin fibers, in particular human keratin fibers such as the hair, comprising: a) one or more fatty substances; b) one or more surfactants; c) one or more oxidation bases; d) one or more couplers based on 2-hydroxynaphthalene derivatives or particular phenol derivatives, acylaminophenol derivatives or quinoline derivatives; f) one or more basifying agents; e) optionally one or more chemical oxidizing agents; and the fatty substance content representing in total at least 25% by weight relative to the total weight of the formulation. The present invention also relates to a process using this composition, and to a multi-compartment device that is suitable for performing the said process. Full Article
f Foam-type hair dye composition for improving hair softness without dripping By www.freepatentsonline.com Published On :: Tue, 12 May 2015 08:00:00 EDT The present invention relates to a hair dye composition, and more particularly, to a foam-type hair dye composition comprising: a first agent including a dye and an alkaline agent and a second agent including an oxidant; and a nonionic viscosity increasing agent of a PEG-aliphatic acid ester or a PPG-aliphatic acid ester in one or both of the first agent and the second agent, thereby largely improving dyeing properties without dripping after the composition is coated on hair. Full Article
f Foam dyeing agent for keratinous fibers with improved color uptake By www.freepatentsonline.com Published On :: Tue, 19 May 2015 08:00:00 EDT The present application provides preparations for changing the color of keratinic fibers, containing in a cosmetically acceptable carrier, at least one color-changing agent, at least one soap, at least one non-ionic surfactant of formula (I), in which R1 denotes an alkyl or alkenyl residue having 5 to 21 carbon atoms, R2 denotes a C2-C4 monohydroxyalkyl residue, and R3 denotes hydrogen, a C1-C4 alkyl residue or a C2-C4 monohydroxyalkyl residue, and at least one propellant wherein the preparation is in the form of a foam, and a proportion of gas in the foam is at least 50% by volume. Full Article
f Formulation for cleaning of hard surfaces and textiles By www.freepatentsonline.com Published On :: Tue, 19 May 2015 08:00:00 EDT Concentrated cleaning formulations for removing debris from hard surfaces and textile surfaces. An exemplary formulation includes a mixture of the following chemical components, in specified proportions: glycerin;monopropylene glycol;triethylene glycol methyl ether;a non-ionic surfactant;an emulsifier;soya methyl ester or canola methyl ester, or both; andhydroxypropyl sulfonate; The formulation is free of water other than insignificant amounts present in the chemical components combined to make the mixture. Combining the formulation with water causes a temperature of the combination to increase above the temperatures of the water and the formulation before combining. Full Article
f Control method of laundry machine By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT A control method of a laundry machine is disclosed. The control method of a laundry machine comprising a balancer includes an unbalance sensing step, wherein the unbalance sensing step recognizes an unbalancemaximum value and an unbalanceminimum value of an unbalance wave and the unbalance sensing step determines an average value of the two unbalance maximumvalue and unbalanceminimum value to be of the unbalance generated in a drum provided in the laundry machine. Full Article
f SYSTEM AND METHOD FOR CONTROLLING A VOLTAGE CONTROLLED OSCILLATOR By www.freepatentsonline.com Published On :: Thu, 22 Jun 2017 08:00:00 EDT An electrical circuit includes: at least one inductor, at least one varactor, and at least two transistors, all of which electrically arranged to form a voltage controlled oscillator (VCO) having an oscillation frequency; wherein the at least two transistors includes a first transistor and a second transistor; wherein the first transistor has a first bulk terminal and a first parasitic diode disposed between the first bulk terminal and the first transistor; wherein the second transistor has a second bulk terminal and a second parasitic diode disposed between the second bulk terminal and the second transistor; wherein application of a first control voltage to the first bulk terminal, application of a second control voltage to the second bulk terminal, or application of first and second control voltages to the first and second bulk terminals, respectively, is effective to change the oscillation frequency of the VCO. Full Article
f Active Filter Device and Circuit Arrangement Comprising an Active Filter Device By www.freepatentsonline.com Published On :: Thu, 22 Jun 2017 08:00:00 EDT An active filter device and a circuit arrangement comprising an active filter device are disclosed. In an embodiment the active filter device includes sensor terminals for applying a sensor signal depending on a sensed noise signal, an output terminal for providing a correction signal that is suitable for reducing the noise signal, a signal source adapted for generating a correction signal and a high-pass filter coupled between the sensor terminals and the signal source, wherein the correction signal is generated with a dependence on a high-pass filtered sensor signal. Full Article
f SYSTEM AND METHOD FOR A REDUCED HARMONIC CONTENT TRANSMITTER FOR WIRELESS COMMUNICATION By www.freepatentsonline.com Published On :: Thu, 22 Jun 2017 08:00:00 EDT A system includes a voltage-controlled oscillator (VCO) to generate an output signal based on an input voltage and a multi-stage delay network to receive the output signal from the VCO. Each stage of the delay network produces a phase-shifted output signal. The system includes a multi-stage digital-to-analog converter (DAC) network, where each stage of the DAC network is associated with a corresponding stage of the delay network. Each stage of the DAC network receives the phase-shifted output signal from its corresponding stage of the delay network and generates a weighted output signal based on the received phase-shifted output signal. The DAC network combines the weighted output signal of each stage. A weighting factor for each stage of the DAC network is selected to reduce harmonic content of the combination of weighted output signals. Full Article
f Power Switch Drivers with Equalizers for Paralleled Switches By www.freepatentsonline.com Published On :: Thu, 22 Jun 2017 08:00:00 EDT Capacitors connected between gate terminals of a plurality of parallel-connected power transistors are charged and discharged in each switching cycle to provide a plurality of power transistor control waveforms from a single gate driver waveform that equalize power losses/temperatures or steady-state currents among the plurality of power transistors. The capacitors are charged to different voltages by diverting current from one transistor driver by disabling another power transistor driver at different respective times in response to measured transient or steady state current or temperature or other operational parameter. Full Article
f SEMICONDUCTOR INTEGRATED CIRCUIT AND HIGH FREQUENCY ANTENNA SWITCH By www.freepatentsonline.com Published On :: Thu, 22 Jun 2017 08:00:00 EDT An integrated circuit includes a drive circuit with a first inverter circuit with a first transistor of a first conductivity type and a second transistor of a second conductivity type. The drains of the first and second transistors are connected. An output circuit is provided having a third transistor of the second conductivity with a gate connected to the drains of the first and second transistors. A capacitor is connected between the gate and a drain of the third transistor and has a capacitance greater than 0.5 pF and less than or equal to 3.0 pF. A gate width of the first transistor when divided by a gate width of the third transistor has a value of less than 1/100. The output circuit is configured to output a transmission signal from the drain of the third transistor. Full Article
f SIGNAL TRANSFER CIRCUIT AND CIRCUIT FOR GENERATING HIT SIGNAL INCLUDING THE SAME By www.freepatentsonline.com Published On :: Thu, 22 Jun 2017 08:00:00 EDT A signal transfer circuit may include a pass gate coupled between first and second nodes; and a control unit suitable for controlling the pass gate to prevent a current flowing from the second node to the first node during turn-on of the pass gate. Full Article
f PHASE FREQUENCY DETECTOR By www.freepatentsonline.com Published On :: Thu, 22 Jun 2017 08:00:00 EDT Described is an apparatus comprising: a first phase frequency detector (PFD) to determine a coarse phase difference between a first clock signal and a second clock signal, the first PFD to generate a first output indicating the coarse phase difference; and a second PFD, coupled to the first PFD, to determine a fine phase difference between the first clock signal and the second clock signal, the second PFD to generate a second output indicating the fine phase difference. Full Article
f LOOP FILTER WITH ACTIVE DISCRETE-LEVEL LOOP FILTER CAPACITOR IN A VOLTAGE CONTROLLED OSCILLATOR By www.freepatentsonline.com Published On :: Thu, 22 Jun 2017 08:00:00 EDT A loop filter with an active discrete-level loop filter capacitor can be used in a VCO (such as for CDR). A loop filter capacitor function is simulated by sensing input loop filter current (such as with a current mirror and source follower in the input leg), and forcing back a loop filter (VCO) control voltage. Loop filter voltage control is provided using a VDAC with a discrete-level VDAC feedback voltage, incremented/decremented based on the sensed loop filter current. In one embodiment, the VDAC voltage is provided as the non-inverting input to an amplifier, with the inverting input providing the control voltage, forced to the VDAC feedback voltage. The VDAC feedback voltage can be provided by increment/decrement comparators based on a voltage deviation on a C2 capacitor (from a reference voltage) that receives the sensed loop filter current (effectively multiplying the C2 capacitance to provide a simulated loop filter capacitance). Full Article
f PHASE LOCKED LOOP AND ASSOCIATED METHOD FOR LOOP GAIN CALIBRATION By www.freepatentsonline.com Published On :: Thu, 22 Jun 2017 08:00:00 EDT A phase locked loop (PLL) includes a controllable oscillator, a charge pump, a type II loop filter, a frequency divider, a phase error processing circuit, a phase frequency detector and a phase alignment circuit. The controllable oscillator generates an oscillating signal. The charge pump circuit generates a charge pump output in a calibration mode. The type II loop filter generates a first control signal to the controllable oscillator according to the charge pump output. The frequency divider performs frequency division upon the oscillating signal for generating a feedback signal. The phase error processing circuit outputs an adjusting signal by comparing a reference signal with the feedback signal. The phase frequency detector generates a detection signal by comparing the feedback signal and the reference signal. The phase alignment circuit generates a second control signal in the calibration mode. Full Article
f MULTICHANNEL TRANSDUCER DEVICES AND METHODS OF OPERATION THEREOF By www.freepatentsonline.com Published On :: Thu, 29 Jun 2017 08:00:00 EDT The present disclosure is directed to multichannel transducer devices and methods of operation thereof. One example device includes at least two acquisition modules that have different sensitives and a signal processing stage that generates a blended signal representative of a lower gain signal mapped onto a higher gain signal. One example method of operation includes receiving a first signal from a first sensor having a first sensitivity, receiving a second signal from a second sensor having a second sensitivity that is different from the first sensitivity, generating a blended signal by mapping the second signal to the first signal, outputting the first signal while the first signal is below a first threshold and above a second threshold, and outputting the blended signal when the first signal is above the first threshold and when the first signal is below the second threshold. Full Article
f Apparatus for Multiple-Input Power Architecture for Electronic Circuitry and Associated Methods By www.freepatentsonline.com Published On :: Thu, 29 Jun 2017 08:00:00 EDT An apparatus includes an integrated circuit (IC). The IC includes a power controller, which includes a regulator and a controller. The regulator receives a plurality of input voltages and provides a regulated output voltage. The controller controls the regulator to generate the regulated output voltage from the plurality of input voltages. The power controller provides power to a load integrated in the IC from a set of arbitrary input voltages. The set of arbitrary input voltages includes the plurality of input voltages. Full Article
f SYSTEMS AND METHODS FOR CONTROLLING A PLURALITY OF POWER SEMICONDUCTOR DEVICES By www.freepatentsonline.com Published On :: Thu, 29 Jun 2017 08:00:00 EDT A power conversion system may include a plurality of power devices and a sensor operably coupled to at least one of the plurality of power devices and configured to detect a voltage, current, or electromagnetic signature signal associated with the plurality of power devices. The power converter may also include circuitry operably coupled to the plurality of power devices and the sensor. The circuitry may send a respective gate signal to each respective power device of the plurality of power devices, such that each respective gate signal is delayed by a respective compensation delay that is determined for the respective power device based on a respective time delay of the respective power device and a maximum time delay of the plurality of power devices. Full Article
f Memory Device and Method for Operating a Memory Device By www.freepatentsonline.com Published On :: Thu, 29 Jun 2017 08:00:00 EDT Devices are provided in which a metastable state can be detected in a memory device by means of a metastability detector. Corresponding information can be conveyed to a further device which, in dependence thereon, can process data from the memory device. Full Article
f FINE DELAY STRUCTURE WITH PROGRAMMABLE DELAY RANGES By www.freepatentsonline.com Published On :: Thu, 29 Jun 2017 08:00:00 EDT A circuit includes a first node, a first inverter connected to the first node and a second node. A variable resistive element is connected to the second node and a third node. A first switch is connected to the second node, a first capacitive element is connected in series with the first switch and the third node, a second switch connected to the second node, a second capacitive element is connected in series with the second switch and the third node, and a second inverter is connected to the third node and a fourth node. Full Article
f CIRCUIT AND METHOD FOR GENERATION OF A CLOCK SIGNAL WITH DUTY-CYCLE ADJUSTMENT By www.freepatentsonline.com Published On :: Thu, 29 Jun 2017 08:00:00 EDT A clock-signal generator circuit, for generating an output clock signal starting from an input clock signal, includes: a monostable stage having a clock input configured to receive the input clock signal, a control input configured to receive a control signal, and an output configured to supply the output clock signal having a duty cycle variable as a function of the control signal; and a feedback loop, operatively coupled to the monostable stage for generating the control signal as a function of a detected value, and of a desired value, of the duty cycle of the output clock signal. Full Article
f DOUBLE FREQUENCY-SHIFT KEYING MODULATING DEVICE By www.freepatentsonline.com Published On :: Thu, 29 Jun 2017 08:00:00 EDT A double frequency-shift keying modulating device includes a modulation module. The modulation module receives an oscillating signal and a digital signal, and generates a modulation output signal that has a first frequency. The first frequency is associated with a frequency of the oscillating signal and varies periodically at a second frequency. The second frequency is associated with the digital signal and the frequency of the oscillating signal. Full Article
f DEVICE AND METHOD FOR PRODUCING A DYNAMIC REFERENCE SIGNAL FOR A DRIVER CIRCUIT FOR A SEMICONDUCTOR POWER SWITCH By www.freepatentsonline.com Published On :: Thu, 29 Jun 2017 08:00:00 EDT A device (442) for producing a dynamic reference signal (UREF) for a control circuit for a power semiconductor switch comprises a reference signal generator (442) for providing a dynamic reference signal (UREF), which has a stationary signal level after elapse of a predefined time following a switching process of the power semiconductor switch, a passive charging circuit (450) which is configured to increase a signal level of the dynamic reference signal in reaction to a switching of a control signal of the power semiconductor switch from an OFF state to ON state for at least one part of the predefined time above the stationary signal level, in order to produce the dynamic reference signal and an output (A) for tapping the dynamic reference signal (UREF). Full Article
f System and Method for a Switchable Capacitance By www.freepatentsonline.com Published On :: Thu, 29 Jun 2017 08:00:00 EDT In accordance with an embodiment, an adjustable capacitance circuit comprising a first branch comprising plurality of transistors having load paths coupled in series with a first capacitor. A method of operating the adjustable capacitance circuit includes programming a capacitance by selectively turning-on and turning-off ones of the plurality of transistors, wherein the load path of each transistor of the plurality of transistors is resistive when the transistor is on and is capacitive when the transistor is off. Full Article
f ULTRA HIGH PERFORMANCE SILICON CARBIDE GATE DRIVERS By www.freepatentsonline.com Published On :: Thu, 29 Jun 2017 08:00:00 EDT A system includes a SiC semiconductor power device; a power supply board that is configured to provide power to a first gate driver board via a connector; the first gate driver board that is coupled and configured to provide current to the SiC semiconductor power device, wherein the first gate driver board is coupled to the power supply board via the connector, and wherein the first gate driver board is separated from the power supply board; and an interconnect board that is coupled to the first gate driver board, wherein the interconnect board is configured to couple the first gate driver board a second gate driver board. Full Article
f HALF-BRIDGE CIRCUIT, H-BRIDGE CIRCUIT AND ELECTRONIC SYSTEM By www.freepatentsonline.com Published On :: Thu, 29 Jun 2017 08:00:00 EDT A half-bridge circuit comprises a high supply contact and a low supply contact. A half-bridge output contact is connectable to drive a load and has a high-side between the high supply contact and the half-bridge output contact and a low-side between the half-bridge output contact and the low supply contact. A high-side bidirectional vertical power transistor at the high-side has a source connected to the high supply contact, and a low-side bidirectional vertical power transistor at the low-side, transistor has a source connected to the low supply contact. The high-side bidirectional vertical power transistor and low-side bidirectional vertical power transistor are connected in cascode and share a common drain connected to the half-bridge output contact, and are controllable to alternatingly allow a current flow from the high supply contact to the half-bridge output contact or from the half-bridge output contact to the low supply contact. Full Article
f FEED-FORWARD CIRCUIT TO IMPROVE INTERMODULATION DISTORTION PERFORMANCE OF RADIO-FREQUENCY SWITCH By www.freepatentsonline.com Published On :: Thu, 29 Jun 2017 08:00:00 EDT A radio-frequency (RF) switch includes a field-effect transistor (FET) disposed between a first node and a second node, the FET having a source, a drain, a gate, and a body. The RF switch further includes a coupling circuit including a first path and a second path, the first path being connected between the gate and one of the source or the drain via a first resistor in series with a first capacitor, the second path being connected between the body and the one of the source or the drain via a second resistor in series with a second capacitor, the coupling circuit configured to allow discharge of interface charge from either or both of the gate and body. Full Article
f Construction and Optical Control of Bipolar Junction Transistors and Thyristors By www.freepatentsonline.com Published On :: Thu, 29 Jun 2017 08:00:00 EDT Methods and systems include constructing and operating a semiconductor device with a mid-band dopant layer. In various implementations, carriers that are optically excited in a mid-band dopant region may provide injection currents that may reduce transition times and increase achievable operating frequency in a bipolar junction transistor (BJT). In various implementations, carriers that are optically excited in a mid-band dopant region within a thyristor may improve closure transition time, effective current spreading velocity, and maximum rate of current rise. Full Article
f SEPARATOR FOR RECHARGEABLE BATTERY AND RECHARGEABLE BATTERY INCLUDING THE SAME By www.freepatentsonline.com Published On :: Thu, 29 Jun 2017 08:00:00 EDT A separator for a rechargeable battery and a rechargeable lithium battery, the separator including a porous substrate; and a heat-resistant porous layer on at least one surface of the porous substrate, wherein the heat-resistant porous layer includes a filler and a copolymer including a structural unit of vinylidenefluoride, a structural unit of hexafluoropropylene, and a structural unit of a carboxyl-containing monomer, the structural unit of hexafluoropropylene is present in an amount of about 4 wt % to about 10 wt %, based on a total weight of the copolymer, and the structural unit of a carboxyl-containing monomer is present in an amount of about 1 wt % to about 7 wt %, based on the total weight of the copolymer. Full Article
f METHODS FOR ALKALIATING ROLL ANODES By www.freepatentsonline.com Published On :: Thu, 29 Jun 2017 08:00:00 EDT The present invention relates to processes that may be used singly or in combination to prevent lithium (or alkali metal) plating or dendrite buildup on bare substrate areas or edges of electrode rolls during alkaliation of a battery or electrochemical cell anode composed of a conductive substrate and coatings, in which the electrode rolls may be coated on one or both sides and may have exposed substrate on edges, or on continuous or discontinuous portions of either or both substrate surfaces. Full Article
f POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES, POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERIES, AND LITHIUM SECONDARY BATTERY By www.freepatentsonline.com Published On :: Thu, 29 Jun 2017 08:00:00 EDT The object of the present invention is to provide a positive electrode active material usable for a lithium ion battery capable of high charge/discharge cycle performance and high discharge capacity. The positive electrode active material for a lithium secondary battery has a layered structure and comprises at least nickel, cobalt and manganese. Further, the positive electrode active material satisfies requirements (1) to (3) below: (1) a primary particle size of 0.1 μm to 1 μm, and a 50% cumulative particle size D50 of 1 μm to 10 μm, (2) a ratio (D90/D10) of volume-based 90% cumulative particle size D50 to volume-based 10% cumulative particle size D10 of 2 to 6, and (3) a lithium carbonate content in a residual alkali on particle surfaces of 0.1% by mass to 0.8% by mass as measured by neutralization titration. Full Article
f POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY By www.freepatentsonline.com Published On :: Thu, 29 Jun 2017 08:00:00 EDT The positive electrode as an embodiment includes a positive electrode current collector mainly composed of aluminum, a positive electrode mixture layer containing a lithium-containing transition metal oxide and disposed above the positive electrode current collector, and a protective layer disposed between the positive electrode current collector and the positive electrode mixture layer. The protective layer contains inorganic particles, an electro-conductive material, and a binding material; is mainly composed of the inorganic particles; and is disposed on the positive electrode current collector to cover the positive electrode current collector in approximately the entire area where the positive electrode mixture layer is disposed and at least a part of the exposed portion of the positive electrode current collector where the positive electrode mixture layer is not disposed on the surface of the positive electrode current collector. Full Article
f POSITIVE ELECTRODE ACTIVE MATERIAL FOR SODIUM SECONDARY BATTERY, AND METHOD FOR PREPARING SAME By www.freepatentsonline.com Published On :: Thu, 29 Jun 2017 08:00:00 EDT The present invention relates to a positive electrode active material for a sodium secondary battery, and a method for preparing the same. The positive electrode active material for the sodium secondary battery according to the present invention is structurally more stable by replacing a part of the transition metal with Li, and accordingly, the thermal stability and life characteristics of the sodium battery including the positive electrode active material are greatly improved. Full Article
f CARBON MATERIAL, METHOD FOR PRODUCING CARBON MATERIAL, AND NON-AQUEOUS SECONDARY BATTERY USING CARBON MATERIAL By www.freepatentsonline.com Published On :: Thu, 29 Jun 2017 08:00:00 EDT A carbon material for a non-aqueous secondary battery containing a graphite capable of occluding and releasing lithium ions, and having a cumulative pore volume at pore diameters in a range of 0.01 μm to 1 μm of 0.08 mL/g or more, a roundness, as determined by flow-type particle image analysis, of 0.88 or greater, and a pore diameter to particle diameter ratio (PD/d50 (%)) of 1.8 or less, the ratio being given by equation (1A): PD/d50 (%)=mode pore diameter (PD) in a pore diameter range of 0.01 μm to 1 μm in a pore distribution determined by mercury intrusion/volume-based average particle diameter (d50)×100 is provided. Full Article