Patents Represented by Attorney, Agent or Law Firm David W. Schumaker
  • Patent number: 6759034
    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: December 5, 2002
    Date of Patent: July 6, 2004
    Assignee: Ovonic Battery Company, Inc.
    Inventors: Stanford R. Ovshinsky, Robert C. Stempel
  • Patent number: 6746645
    Abstract: Hydrogen propelled vehicles and fundamentally new magnesium-based hydrogen storage alloy materials which for the first time make it feasible and practical to use solid state storage and delivery of hydrogen to power internal combustion engine or fuel cell vehicles. These exceptional alloys have remarkable hydrogen storage capacity of well over 6 weight % coupled with extraordinary absorption kinetics such that the alloy powder absorbs 80% of its total capacity within 10 minutes at 300° C. and a cycle life of at least 500 cycles without loss of capacity or kinetics.
    Type: Grant
    Filed: June 20, 2002
    Date of Patent: June 8, 2004
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Stanford R. Ovshinsky, Rosa T. Young
  • Patent number: 6737194
    Abstract: A low temperature hydrogen storage alloy which is not pyrophoric upon exposure to ambient atmosphere, particularly even after hydrogen charge/discharge cycling.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: May 18, 2004
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Stanford R. Ovshinsky, Rosa T. Young, Baoquan Huang
  • Patent number: 6726783
    Abstract: A fundamentally new magnesium-based hydrogen storage alloy material which makes it feasible and practical to use solid state storage and delivery of hydrogen to power internal combustion engine or fuel cell vehicles. These alloys have remarkable hydrogen storage capacity of well over 6 weight percent. The alloys also have extraordinary absorption kinetics such that the alloy absorbs 80 percent of its total capacity within five minutes. The alloys are in particle form where the particles have a size ranging from 30 to 70 microns. The alloys also have a dual phase structure (formed by cooling from the melt at a cooling rate of 103-104° C.). The dual phase structure is such that an intergranular region surrounds a major hydrogen storage phase thus providing the alloys with resistance to sintering during high temperature hydriding/dehydriding cycling thereof. As a result of the dual phase structure, the alloys have an extended cycle life.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: April 27, 2004
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Rosa Young, Benjamin Chao, Stanford R. Ovshinsky
  • Patent number: 6708546
    Abstract: Heat transfer management/compartmentalization system for a metal hydride hydrogen storage containment unit. The hydrogen storage alloy is preferably divided into compartments having a honeycomb configuration. Heat exchanger tubing is placed through the compartments to promote heat transfer between the hydrogen storage alloy and the exterior environment.
    Type: Grant
    Filed: June 17, 2002
    Date of Patent: March 23, 2004
    Assignee: Texaco Ovonic Hydrogen Systems LLC
    Inventors: Vitaliy Myasnikov, Baoquan Huang, Rosa Young, Stanford R. Ovshinsky
  • Patent number: 6709497
    Abstract: Heat transfer management/compartmentalization system for a metal hydride hydrogen storage containment unit. The hydrogen storage alloy is preferably divided into compartments having a honeycomb configuration. Heat exchanger tubing is placed through the compartments to promote heat transfer between the hydrogen storage alloy and the exterior environment.
    Type: Grant
    Filed: May 9, 2002
    Date of Patent: March 23, 2004
    Assignee: Texaco Ovonic Hydrogen Systems LLC
    Inventors: Vitaliy Myasnikov, Baoquan Huang, Rosa Young, Stanford R. Ovshinsky
  • Patent number: 6703156
    Abstract: Fuel cell oxygen electrode and instant startup fuel cells employing such oxygen electrode. The oxygen electrode operates through the mechanism of redox couples which uniquely provide multiple degrees of freedom in selecting the operating voltages available for such fuel cells. Such oxygen electrodes provide the fuel cells in which they are used a “buffer” or “charge” of oxidizer available within the oxygen electrode at all times.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: March 9, 2004
    Assignee: Texaco Ovonic Fuel Cell, LLC
    Inventors: Stanford R. Ovshinsky, Srinivasan Venkatesan, Boyko Aladjov, Subhash K. Dhar, Kevin Fok, Thomas Hopper
  • Patent number: 6672078
    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: February 14, 2003
    Date of Patent: January 6, 2004
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Stanford R. Ovshinsky, Rosa T. Young, Baoquan Huang, Farshad Bavarian, Gene Nemanich
  • Patent number: 6626323
    Abstract: A hydrogen storage unit which uses hydrogen storage alloys to store hydrogen, and more particularly a heat transfer management/compartmentalization system for use in such system. The hydrogen storage alloy may be divided into compartments, separated by discs, further divided into sub-compartments by a flapper wheel. The discs and flapper wheel provide for optimal heat transfer throughout the system. The compartmentalization of the vessel may prevent compaction of the hydrogen storage alloys, which could lead to excessive strain on the vessel causing damage, deformation, or rupture of the vessel.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: September 30, 2003
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Ned T. Stetson, Michael Marchio, Arthur Holland, Daniel Alper, David Gorman, Jun Yang
  • Patent number: 6627148
    Abstract: A magnesium hydrogen storage alloy that has been hydrided and compacted into highly dense pellets for shipment and use, a method for making said magnesium alloy and a method for the safe, economical shipment of said hydrided magnesium hydrogen storage material.
    Type: Grant
    Filed: August 8, 2000
    Date of Patent: September 30, 2003
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Stanford R. Ovshinsky, Rosa T. Young, Ned T. Stetson, Vitaliy Myasnikov
  • Patent number: 6627340
    Abstract: Hydrogen propelled fuel cell vehicle system designs that reduce the relative cost of releasing hydrogen from hydrogen storage alloys by providing and/or utilizing secondary sources of heat to supply the heat of desorption of stored hydrogen. The secondary source can include combusting conventional secondary (non-hydrogen) fuels. The fuel supply system uses fundamentally new magnesium-based hydrogen storage alloy materials which for the first time make it feasible and practical to use solid state storage and delivery of hydrogen to power fuel cell vehicles. These exceptional alloys have remarkable hydrogen storage capacity of over 7 weight % coupled with extraordinary absorption kinetics such that the alloy powder absorbs 80% of its total capacity within 1.5 minutes at 300° C. and a cycle life of at least 2000 cycles without loss of capacity or kinetics.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: September 30, 2003
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Stanford R. Ovshinsky, Rosa T. Young
  • Patent number: 6620539
    Abstract: Fuel cell cathodes and instant startup fuel cells employing the cathode. The cathodes operate through the mechanism of redox couples which uniquely provide multiple degrees of freedom in selecting the operating voltages available for such fuel cells. Such cathodes provide the fuel cells in which they are used a “buffer” or “charge” of oxidizer available within the cathode at all times.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: September 16, 2003
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Stanford R. Ovshinsky, Boyko Aladjov, Srinivasan Venkatesan, Subhash Dhar
  • 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: 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: 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: 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: 6524745
    Abstract: An electrochemically stabilized Ca—Ni hydrogen storage alloy material for use as the active negative electrode material of an alkaline electrochemical cell. The alloy material includes at least one modifier element which stabilizes the alloy material from degradation during electrochemical cycling in an alkaline cell, by protecting calcium within the alloy and preventing dissolution of calcium into the alkaline electrolyte. The alloy has the formula (Ca1−x−yMxNi2y)Ni5−zQz, where M is at least one element selected from the group consisting of misch metal, rare earth metals, zirconium and mixtures of Zr with Ti or V, Q is at least one element selected form the group consisting of Si, Al, Ge, Sn, In, Cu, Zn, Co, and mixtures thereof, x ranges between about 0.02 and 0.2, y ranges between about 0.02 and 0.4, and z ranges from about 0.05 to about 1.00.
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: February 25, 2003
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Stanford R. Ovshinsky, Rosa T. Young
  • Patent number: 6519951
    Abstract: A complete infrastructure system for the generation, storage, transportation, and delivery of hydrogen which makes a hydrogen ecosystem possible. The infrastructure system utilizes high capacity, low cost, light weight thermal hydrogen storage alloy materials having fast kinetics. Also, a novel hydrogen storage bed design which includes a support/heat-transfer component which is made from a highly porous, high thermal conductivity, solid material such as a high thermal conductivity graphitic foam. Finally a material including at least one particle having atomically engineered local chemical and electronic environments, characterized in that the local environments providing bulk nucleation.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: February 18, 2003
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Stanford R. Ovshinsky, Rosa T. Young
  • Patent number: 6517970
    Abstract: A low temperature hydrogen storage alloy which is not pyrophoric upon exposure to ambient atmosphere, particularly even after hydrogen charge/discharge cycling.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: February 11, 2003
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Stanford R. Ovshinsky, Rosa T. Young, Baoquan Huang