Patents by Inventor Yanbo Wang

Yanbo Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20180175442
    Abstract: A rechargeable lithium-sulfur cell comprising a cathode, an anode, a separator electronically separating the two electrodes, a first electrolyte in contact with the cathode, and a second electrolyte in contact with the anode, wherein the first electrolyte contains a first concentration, C1, of a first lithium salt dissolved in a first solvent when the first electrolyte is brought in contact with the cathode, and the second electrolyte contains a second concentration, C2, of a second lithium salt dissolved in a second solvent when the second electrolyte is brought in contact with the anode, wherein C1 is less than C2. The cell exhibits an exceptionally high specific energy and a long cycle life.
    Type: Application
    Filed: December 7, 2017
    Publication date: June 21, 2018
    Applicant: Nanotek Instruments, Inc.
    Inventors: Hui He, Bor Z. Jang, Yanbo Wang, Aruna Zhamu, Wei Xiong
  • Patent number: 9917303
    Abstract: A rechargeable lithium-sulfur cell comprising an anode, a separator and/or electrolyte, and a sulfur cathode, wherein the cathode comprises (a) exfoliated graphite worms that are interconnected to form a porous, conductive graphite flake network comprising pores having a size smaller than 100 nm; and (b) nano-scaled powder or coating of sulfur, sulfur compound, or lithium polysulfide disposed in the pores or coated on graphite flake surfaces wherein the powder or coating has a dimension less than 100 nm. The exfoliated graphite worm amount is in the range of 1% to 90% by weight and the amount of powder or coating is in the range of 99% to 10% by weight based on the total weight of exfoliated graphite worms and sulfur (sulfur compound or lithium polysulfide) combined. The cell exhibits an exceptionally high specific energy and a long cycle life.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: March 13, 2018
    Assignee: Nanotek Instruments, Inc.
    Inventors: Yanbo Wang, Bor Z. Jang, Hui He, Aruna Zhamu, Yi-jun Lin
  • Patent number: 9905287
    Abstract: An apparatus includes an interface and a circuit. The interface may be configured to generate a read signal that carries read data from a memory channel. The circuit may be configured to (i) modify the read signal with a de-emphasis on each pull up of the read signal and a pre-emphasis on each pull down of the read signal and (ii) transfer the read signal as modified to a memory controller.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: February 27, 2018
    Assignee: INTEGRATED DEVICE TECHNOLOGY, INC.
    Inventors: Yanbo Wang, Praveen Rajan Singh, Yue Yu, Craig DeSimone
  • Patent number: 9882238
    Abstract: A rechargeable lithium-sulfur cell comprising a cathode, an anode, a separator electronically separating the two electrodes, a first electrolyte in contact with the cathode, and a second electrolyte in contact with the anode, wherein the first electrolyte contains a first concentration, C1, of a first lithium salt dissolved in a first solvent when the first electrolyte is brought in contact with the cathode, and the second electrolyte contains a second concentration, C2, of a second lithium salt dissolved in a second solvent when the second electrolyte is brought in contact with the anode, wherein C1 is less than C2. The cell exhibits an exceptionally high specific energy and a long cycle life.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: January 30, 2018
    Assignee: Nanotek Instruments, Inc.
    Inventors: Hui He, Bor Z Jang, Yanbo Wang, Aruna Zhamu, Wei Xiong
  • Patent number: 9860088
    Abstract: An apparatus includes a detector circuit and a data buffer. The detector circuit may be configured to (i) identify a start of a command sequence associated with a directed access to a memory system and (ii) generate a control signal indicating a non-consecutive clock associated with the start of the command sequence. The data buffer circuit may be configured to initialize a condition of a receiver circuit in response to the control signal prior to reception of a first data bit associated with the command sequence.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: January 2, 2018
    Assignee: INTERGRATED DEVICE TECHNOLOGY, INC.
    Inventors: Craig DeSimone, Praveen Singh, Alejandro Gonzalez, Yue Yu, YanBo Wang
  • Publication number: 20170373886
    Abstract: An apparatus comprises a plurality of driver circuits and a control registers block. The plurality of driver circuits may be configured to drive a read line in response to a memory signal and a reference voltage. The control registers block generally configures the plurality of driver circuits to implement an asymmetric voltage swing of the read line about a voltage level that is half of the reference voltage.
    Type: Application
    Filed: September 8, 2017
    Publication date: December 28, 2017
    Inventors: Yue Yu, Craig DeSimone, Al Xuefeng Fang, Yanbo Wang
  • Patent number: 9812736
    Abstract: A rechargeable lithium-selenium cell comprising a cathode having a cathode active material selected from Se or SexSy (x/y ratio=0.01 to 100), an anode having an anode active material, a porous separator electronically separating the anode and the cathode, a non-flammable quasi-solid electrolyte in contact with the cathode and the anode, wherein the electrolyte contains a lithium salt dissolved in a first organic liquid solvent with a lithium salt concentration sufficiently high (at least 2.0 M, more preferably >3.0 M) so that the electrolyte exhibits a vapor pressure less than 0.01 kPa when measured at 20° C., a flash point at least 20 degrees Celsius higher than the flash point of the first organic liquid solvent alone, a flash point higher than 150° C., or no flash point. This battery cell is non-flammable and safe, has a long cycle life, high capacity, and high energy density.
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: November 7, 2017
    Assignee: Nanotek Instruments, Inc.
    Inventors: Hui He, Bor Z. Jang, Yanbo Wang, Aruna Zhamu
  • Patent number: 9794087
    Abstract: An apparatus comprising a plurality of driver circuits and a plurality of control registers. The plurality of driver circuits may be configured to modify a memory signal that transfers read data across a read line to a memory controller. The plurality of control registers may be configured to enable one or more of the driver circuits. A pull up strength and a pull down strength of the memory signal may be configured in response to how many of the plurality of driver circuits are enabled. The plurality of driver circuits implement an asymmetric pull up and pull down of the memory signal.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: October 17, 2017
    Assignee: INTEGRATED DEVICE TECHNOLOGY, INC.
    Inventors: Yue Yu, Craig DeSimone, Al Xuefeng Fang, Yanbo Wang
  • Publication number: 20170294647
    Abstract: Disclosed is a facile and cost effective method of producing metal-doped nano silicon powder or graphene-doped metal-doped silicon nano powder having a particle size smaller than 100 nm. The method comprises: (a) preparing a silicon precursor/metal precursor/graphene nano composite; (b) mixing the silicon precursor/metal precursor/graphene nano composite with a desired quantity of magnesium; (c) converting the silicon precursor to form a mixture of graphene-doped silicon and a reaction by-product through a thermal and/or chemical reduction reaction; and (d) removing the reaction by-product from the mixture to obtain graphene-doped metal-doped silicon nano powder.
    Type: Application
    Filed: June 23, 2017
    Publication date: October 12, 2017
    Applicant: Nanotek Instruments, Inc.
    Inventors: Yanbo Wang, Aruna Zhamu, Bor Z. Jang
  • Publication number: 20170256303
    Abstract: An apparatus comprising a plurality of driver circuits and a plurality of control registers. The plurality of driver circuits may be configured to modify a memory signal that transfers read data across a read line to a memory controller. The plurality of control registers may be configured to enable one or more of the driver circuits. A pull up strength and a pull down strength of the memory signal may be configured in response to how many of the plurality of driver circuits are enabled. The plurality of driver circuits implement an asymmetric pull up and pull down of the memory signal.
    Type: Application
    Filed: March 3, 2016
    Publication date: September 7, 2017
    Inventors: Yue Yu, Craig DeSimone, Al Xuefeng Fang, Yanbo Wang
  • Patent number: 9728777
    Abstract: Disclosed is a facile and cost effective method of producing nano silicon powder or graphene-doped silicon nano powder having a particle size smaller than 100 nm. The method comprises: (a) preparing a silicon precursor/graphene nano composite; (b) mixing the silicon precursor/graphene nano composite with a desired quantity of magnesium; (c) converting the silicon precursor to form a mixture of graphene-doped silicon and a reaction by-product through a thermal and/or chemical reduction reaction; and (d) removing the reaction by-product from the mixture to obtain graphene-doped silicon nano powder.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: August 8, 2017
    Assignee: Nanoteck Instruments, Inc.
    Inventors: Bor Z Jang, Yanbo Wang, Aruna Zhamu
  • Publication number: 20170212847
    Abstract: An apparatus includes an interface and a circuit. The interface may be configured to generate a read signal that carries read data from a memory channel. The circuit may be configured to (i) modify the read signal with a de-emphasis on each pull up of the read signal and a pre-emphasis on each pull down of the read signal and (ii) transfer the read signal as modified to a memory controller.
    Type: Application
    Filed: April 6, 2017
    Publication date: July 27, 2017
    Inventors: Yanbo Wang, Praveen Rajan Singh, Yue Yu, Craig DeSimone
  • Publication number: 20170162251
    Abstract: An apparatus includes an interface and a circuit. The interface may be configured to generate a memory signal that carries read data from a memory channel. The circuit may be configured to modify a read signal that transfers the read data across a read line to a memory controller. A filter may delay the memory signal to generate a delayed signal. A driver generally amplifies the memory signal to generate the read signal. The driver may modify the read signal with a de-emphasis on each pull up of the memory signal and a pre-emphasis on each pull down of the memory signal based on the delayed signal.
    Type: Application
    Filed: December 2, 2015
    Publication date: June 8, 2017
    Inventors: Yanbo Wang, Praveen Rajan Singh, Yue Yu, Craig DeSimone
  • Patent number: 9673447
    Abstract: A method of operating a lithium-ion cell comprising (a) a cathode comprising a carbon or graphitic material having a surface area to capture and store lithium thereon; (b) an anode comprising an anode active material; (c) a porous separator disposed between the two electrodes; (d) an electrolyte in ionic contact with the two electrodes; and (e) a lithium source disposed in at least one of the two electrodes to obtain an open circuit voltage (OCV) from 0.5 volts to 2.8 volts when the cell is made; wherein the method comprises: (A) electrochemically forming the cell from the OCV to either a first lower voltage limit (LVL) or a first upper voltage limit (UVL), wherein the first LVL is no lower than 0.1 volts and the first UVL is no higher than 4.6 volts; and (B) cycling the cell between a second LVL and a second UVL.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: June 6, 2017
    Assignee: Nanotek Instruments, Inc.
    Inventors: Guorong Chen, Yanbo Wang, Qing Fang, Xiqing Wang, Aruna Zhamu, Bor Z. Jang
  • Patent number: 9653147
    Abstract: An apparatus includes an interface and a circuit. The interface may be configured to generate a memory signal that carries read data from a memory channel. The circuit may be configured to modify a read signal that transfers the read data across a read line to a memory controller. A filter may delay the memory signal to generate a delayed signal. A driver generally amplifies the memory signal to generate the read signal. The driver may modify the read signal with a de-emphasis on each pull up of the memory signal and a pre-emphasis on each pull down of the memory signal based on the delayed signal.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: May 16, 2017
    Assignee: INTEGRATED DEVICE TECHNOLOGY INC.
    Inventors: Yanbo Wang, Praveen Rajan Singh, Yue Yu, Craig DeSimone
  • Patent number: 9601805
    Abstract: A process for producing a separator-electrolyte layer for use in a lithium battery, comprising: (a) providing a porous separator; (b) providing a quasi-solid electrolyte containing a lithium salt dissolved in a first liquid solvent up to a first concentration no less than 3 M; and (c) coating or impregnating the separator with the electrolyte to obtain the separator-electrolyte layer with a final concentration?the first concentration so that the electrolyte exhibits a vapor pressure less than 0.01 kPa when measured at 20° C., a vapor pressure less than 60% of that of the first liquid solvent alone, a flash point at least 20 degrees Celsius higher than a flash point of the first liquid solvent alone, a flash point higher than 150° C., or no detectable flash point. A battery using such a separator-electrolyte is non-flammable and safe, has a long cycle life, high capacity, and high energy density.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: March 21, 2017
    Assignee: Nanotek Instruments, Inc.
    Inventors: Hui He, Bor Z Jang, Yanbo Wang, Aruna Zhamu
  • Patent number: 9601803
    Abstract: A separator-electrolyte layer product for use in a lithium battery, comprising: (a) a porous thin-film separator selected from a porous polymer film, a porous mat, fabric, or paper made of polymer or glass fibers, or a combination thereof, wherein the separator has a thickness less than 500 ?m; and (b) a non-flammable quasi-solid electrolyte containing a lithium salt dissolved in a liquid solvent up to a concentration no less than 3 M; wherein the porous thin-film separator is coated with the quasi-solid electrolyte so that the layer product exhibits a vapor pressure less than 0.01 kPa when measured at 20° C., a vapor pressure less than 60% of the vapor pressure of the liquid solvent alone, a flash point at least 20 degrees Celsius higher than a flash point of the first liquid solvent alone, a flash point higher than 150° C., or no detectable flash point.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: March 21, 2017
    Assignee: Nanotek Instruments, Inc.
    Inventors: Hui He, Bor Z Jang, Yanbo Wang, Aruna Zhamu
  • Patent number: 9583175
    Abstract: An apparatus includes a first circuit and a second circuit. The first circuit may be configured to (a) buffer write signals presented on a data bus connected between a memory channel and a memory controller, (b) buffer read signals presented on the data bus and (c) condition the write signals. The conditioning may be implemented by (i) converting the write signals to a first differential write signal on a first differential write line and a second differential write signal on a second differential write line and (ii) connecting (a) a negative impedance and (b) a combined resistive and capacitive load between the first and second differential write lines. The second circuit may be configured to (a) convert the first and the second differential write signals to a single-ended write signal and (b) present the single-ended write signal to the data bus.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: February 28, 2017
    Assignee: INTEGRATED DEViCE TECHNOLOGY, INC.
    Inventors: Praveen Rajan Singh, Yanbo Wang
  • Patent number: 9580325
    Abstract: A process for producing a highly oriented graphene film (HOGF), comprising: (a) preparing a graphene oxide (GO) dispersion having GO sheets dispersed in a fluid medium; (b) dispensing and depositing the dispersion onto a surface of a supporting substrate to form a layer of GO, wherein the dispensing and depositing procedure includes subjecting the dispersion to an orientation-inducing stress; (c) removing the fluid medium to form a dried layer of GO having an inter-plane spacing d002 of 0.4 nm to 1.2 nm; (d) slicing the dried layer of GO into multiple pieces of dried GO and stacking at least two pieces of dried GO to form a mass of multiple pieces of GO; and (f) heat treating the mass under an optional first compressive stress to produce the HOGF at a first heat treatment temperature higher than 100° C. to an extent that an inter-plane spacing d002 is decreased to a value less than 0.4 nm.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: February 28, 2017
    Assignee: Nanotek Instruments, Inc.
    Inventors: Aruna Zhamu, Bor Z Jang, Yanbo Wang, Lucy Fu
  • Patent number: 9564630
    Abstract: The present invention provides a process for producing a graphene-enhanced anode active material for use in a lithium battery. The process comprises (a) providing a continuous film of a graphene material into a deposition zone; (b) introducing vapor or atoms of a precursor anode active material into the deposition zone, allowing the vapor or atoms to deposit onto a surface of the graphene material film to form a sheet of an anode active material-coated graphene material; and (c) mechanically breaking this sheet into multiple pieces of anode active material-coated graphene; wherein the graphene material is in an amount of from 0.1% to 99.5% by weight and the anode active material is in an amount of at least 0.5% by weight, all based on the total weight of the graphene material and the anode active material combined.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: February 7, 2017
    Assignee: Nantek Instuments, Inc.
    Inventors: Yanbo Wang, Bor Z Jang, Hui He, Aruna Zhamu