Patents Represented by Attorney, Agent or Law Firm Marvin S. Siskind
  • Patent number: 6617072
    Abstract: An active composition for an electrode of an electrochemical device. The active composition comprises an active electrode material, a carbon material, and a binder where the binder comprises an elastomeric polymer. Preferably, the active electrode material is nickel hydroxide, the carbon material is graphite and the elastomeric polymer is styrene-butadiene.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: September 9, 2003
    Assignee: Ovonic Battery Company, Inc.
    Inventors: Srinivasan Venkatesan, Binay Prasad, Kenneth Laming, Boyko Aladjov
  • Patent number: 6616891
    Abstract: A reversible hydrogen storage alloy capable of absorbing approximately 4 weight percent hydrogen and desorbing up to 2.8 weight percent hydrogen at temperatures up to 100° C. The hydrogen storage alloy is generally composed of titanium, vanadium, chromium, and manganese. Additional elements such as zirconium, yttrium, iron, nickel, zinc, molybdenum, and tantalum may also be included in the alloy.
    Type: Grant
    Filed: September 18, 2002
    Date of Patent: September 9, 2003
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Krishna Sapru, Zhaosheng Tan, Mohamed Bazzi, Subramanian Ramachandran, Stanford R. Ovshinsky
  • Patent number: 6617192
    Abstract: An electrically operated memory element having a contact in electrical communication with a memory material programmable to at least a first resistance state and a second resistance state. Preferably, the contact includes at least a first region having a first resistivity and a second region having a second resistivity greater than the first resistivity where the more resistive region is adjacent to the memory material.
    Type: Grant
    Filed: October 3, 2000
    Date of Patent: September 9, 2003
    Assignee: Ovonyx, Inc.
    Inventors: Tyler Lowrey, Stephen J. Hudgens, Patrick J. Klersy
  • Patent number: 6613604
    Abstract: A method for making a small pore. The defined pore is useful for the fabrication of programmable resistance memory elements. The programmable resistance memory material may be a chalcogenide.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: September 2, 2003
    Assignee: Ovonyx, Inc.
    Inventors: Jon Maimon, Patrick Klersy
  • Patent number: 6613471
    Abstract: A hydrogen storage alloy active material for the anode of Ovonic instant startup/regenerative fuel cells. The active material includes a hydrogen storage alloy material with a water reactive chemical hydride additive, which, upon utilization of the active material in an anode of an alkaline electrolyte fuel cell, gives the anode added benefits, not attainable by using hydrogen storage alloy material alone. These added benefits include 1) precharge of the hydrogen storage material with hydrogen; 2) higher porosity/increased surface area/reduced electrode polarization at high currents; 3) simplified, faster activation of the hydrogen storage alloy; and 4) optionally, enhanced corrosion protection for the hydrogen storage alloy.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: September 2, 2003
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Stanford R. Ovshinsky, Boyko Aladjov, Srinivasan Venkatesan, Thomas Hopper, Kevin Fok, Subhash Dhar
  • Patent number: 6607707
    Abstract: A process for producing hydrogen gas from hydrocarbon and oxygenated hydrocarbon compounds. The process includes combining a hydrocarbon or oxygenated hydrocarbon compound with a base to form a mixture that undergoes a reaction to produce hydrogen gas. The reaction mixture optionally includes water and/or a catalyst. In a preferred embodiment, hydrogen production occurs from methanol in the liquid phase without the production of environment harmful by-product gases.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: August 19, 2003
    Assignee: Ovonic Battery Company, Inc.
    Inventors: Benjamin Reichman, William Mays
  • Patent number: 6608773
    Abstract: A memory system, comprising: a memory cell comprising a programmable resistance element programmable to at least a first resistance state and a second resistance state. The memory cell interconnecting a row line and a column line. A power line, distinct from the row line and the column line, coupling said memory cell to a power source.
    Type: Grant
    Filed: October 10, 2001
    Date of Patent: August 19, 2003
    Assignee: Ovonyx, Inc.
    Inventors: Tyler Lowrey, Guy C. Wicker
  • Patent number: 6605375
    Abstract: A method of activating a hydrogen storage alloy electrode. The method comprises the step of applying current cycles to the electrode where each current cycle includes a forward pulse effective to at least partially charge the electrode and a reverse pulse effective to at least partially discharge the electrode.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: August 12, 2003
    Assignee: Ovonic Battery Company, Inc.
    Inventors: Stanford R. Ovshinsky, Boyko Aladjov, Srinivasan Venkatesan, Subhash K. Dhar, Thomas Hopper, Kevin Fok
  • Patent number: 6593024
    Abstract: A hydrogen storage battery with improved cycle life and a method for making the same. The battery has a negative electrode with an electrochemically active negative material and a negative electrode capacity and a positive electrode electrochemically coupled with the negative electrode, the positive electrode having a positive electrode capacity and an electrochemically active positive material with a precharge. Also described herein is a positive electrode material for a hydrogen storage battery and a method for making the same. The positive electrode material includes a preoxidized positive active material which is partially non-oxidized. The preoxidized material may be used to provide a precharge to the positive electrode.
    Type: Grant
    Filed: June 20, 2002
    Date of Patent: July 15, 2003
    Assignee: Ovonic Battery Company, Inc.
    Inventors: Michael A. Fetcenko, Kwo Young, Cristian Fierro
  • Patent number: 6591616
    Abstract: A combine bulk storage/single stage metal hydride compressor, a hydrogen storage alloy therefore and a hydrogen transportation/distribution infrastructure which incorporates the combine bulk storage/single stage metal hydride compressor.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: July 15, 2003
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Stanford R. Ovshinsky, Rosa T. Young, Baoquan Huang, Farshad Bavarian, Gene Nemanich
  • Patent number: 6593017
    Abstract: A nonreversible metal hydride for use as a hydrogen fuel. The nonreversible metal hydride is formed from an intermetallic compound having the formula Ca1+aLi2+b. The Ca1+aLi2+b is formed by melting amounts of elemental lithium and calcium together by induction heating in an argon atmosphere. The Ca1+aLi2+b is cooled and crushed into a powder. The alloy powder is subsequently hydrogenated at ambient temperatures or lower. Resulting is a metal hydride having exceptional reactivity to water during hydrolysis due to its nano-crystalline structure. Dehydrogenation of the metal hydride does not regularly occur due to the absorbed hydrogen being chemically bonded to the lithium and calcium. The Ca1+aLi2+b hydride may be used in a variety of applications as a hydrogen fuel and the Ca1+aLi2+b alloy may be used as a desiccant for removing moisture from hydrogen or hydrogen containing streams.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: July 15, 2003
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Zhaosheng Tan, Krishna Sapru
  • Patent number: 6589686
    Abstract: A method of activating a metal hydride electrode of an alkaline fuel cell. The method comprises the step of applying current cycles to the anode where each current cycle includes a forward current effective to at least partially charge the electrode and a reverse current effective to at least partially discharge the electrode.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: July 8, 2003
    Assignee: Ovonic Battery Company, Inc.
    Inventors: Stanford R. Ovshinsky, Boyko Aladjov, Srinivasan Venkatesan, Subhash K. Dhar, Thomas Hopper, Kevin Fok
  • Patent number: 6589714
    Abstract: A method of making a electrically operated programmable resistance memory element. A silylated photoresist sidewall spacer is used as a mask for form raised portions on an edge of a conductive layer. The modified conductive layer is used as an electrode for the memory element.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: July 8, 2003
    Assignee: Ovonyx, Inc.
    Inventors: Jon Maimon, Andrew Pomerene
  • Patent number: 6569567
    Abstract: A method of activating a hydrogen storage alloy or a hydrogen storage alloy electrode. The method includes the step of contacting the hydrogen storage alloy or hydrogen storage alloy electrode with an aqueous solution of an alkali metal hydroxide where the concentration of the alkali metal hydroxide is at least about 40 weight percent. The method produces a hydrogen storage alloy and hydrogen storage alloy electrode with increased surface area.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: May 27, 2003
    Assignee: Ovonic Battery Company, Inc.
    Inventors: Benjamin Reichman, William Mays, Michael A. Fetcenko
  • Patent number: 6569566
    Abstract: A method for making a composite positive electrode material for use in electrochemical cells. The composite material comprises a particle of positive electrode material and a nucleating particle at least partially embedded within the interior of the particle of positive electrode material.
    Type: Grant
    Filed: December 30, 2000
    Date of Patent: May 27, 2003
    Assignee: Ovonic Battery Company, Inc.
    Inventors: Michael A. Fetcenko, Christian Fierro, Stanford R. Ovshinsky, Beth Sommers, Benjamin Reichman, Kwo Young, William Mays
  • Patent number: 6565836
    Abstract: A very low emission hybrid electric vehicle incorporating an integrated propulsion system which includes a hydrogen powered internal combustion engine, a metal hydride hydrogen storage unit, an electric motor, high specific power, high energy density nickel-metal hydride (NiMH) batteries, and preferably a regenerative braking system. The nickel-metal hydride battery module preferably has a peak power density in relation to energy density as defined by: P>1,375−15E, where P is greater than 600 Watts/kilogram, where P is the peak power density as measured in Watts/kilogram and E is the energy density as measured in Watt-hours/kilogram.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: May 20, 2003
    Assignee: Ovonic Battery Company, Inc.
    Inventors: Stanford R. Ovshinsky, Robert C. Stempel
  • Patent number: 6557655
    Abstract: A hybrid electric vehicle drive system comprising a combustion engine, an electric motor and at least one nickel-metal hydride battery module forming a power source for providing electric power to the electric motor, the at least one nickel-metal hydride battery module having a peak power density in relation to energy density as defined by: P>1,375−15E where P is the peak power density as measured in Watts/kilogram and E is the energy density as measured in Watt-hours/kilogram.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: May 6, 2003
    Assignee: Ovonic Battery Company, Inc.
    Inventors: Stanford R. Ovshinsky, Robert C. Stempel
  • Patent number: 6548209
    Abstract: A composite positive electrode material for use in electrochemical cells. The composite material includes a particle of positive electrode material and a nucleating particle at least partially embedded within the interior of the particle of positive electrode material.
    Type: Grant
    Filed: December 30, 2000
    Date of Patent: April 15, 2003
    Assignee: Ovonic Battery Company, Inc.
    Inventors: Michael A. Fetcenko, Christian Fierro, Stanford R. Ovshinsky, Beth Sommers, Benjamin Reichman, Kwo Young, William Mays
  • Patent number: 6536487
    Abstract: Atomically engineered hydrogen storage alloys which include a spectrum of hydrogen bonding energies and multiple hydride phases which extends and enhances their storage capacity at high pressures and high pressure hydrogen storage units which contain a variable amount of these hydrogen storage alloys therein to enhance the storage capacity of the unit beyond that obtainable by conventional alloys or pressurized hydrogen gas alone.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: March 25, 2003
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Stanford R. Ovshinsky, Rosa Young, Baoquan Huang
  • Patent number: 6537700
    Abstract: An active material mixture for use in a paste for fabricating positive electrodes, comprising a nickel hydroxide material, and an additive material comprising at least one material selected from the group consisting of a misch metal or a misch metal alloy. A nickel positive electrode and an alkaline electrochemical cell using this active material mixture.
    Type: Grant
    Filed: November 7, 2000
    Date of Patent: March 25, 2003
    Assignee: Ovonic Battery Company, Inc.
    Inventors: Stanford R. Ovshinsky, Boyko Aladjov, Srinivasan Venkatesan, Subhash K. Dhar