Patents Represented by Attorney Bruce H. Cottrell

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  • Water-soluble polymers and compositions thereof
    Patent number: 6441089
    Abstract: Water-soluble polymers including functionalization from the group of amino groups, carboxylic acid groups, phosphonic acid groups, phosphonic ester groups, acylpyrazolone groups, hydroxamic acid groups, aza crown ether groups, oxy crown ethers groups, guanidinium groups, amide groups, ester groups, aminodicarboxylic groups, permethylated polvinylpyridine groups, permethylated amine groups, mercaptosuccinic acid groups, alkyl thiol groups, and N-alkylthiourea groups are disclosed.
    Type: Grant
    Filed: April 6, 1999
    Date of Patent: August 27, 2002
    Assignee: The Regents of the University of California
    Inventors: Barbara F. Smith, Thomas W. Robison, Joel W. Gohdes
  • Architecture for high critical current superconducting tapes
    Patent number: 6383989
    Abstract: Improvements in critical current capacity for superconducting film structures are disclosed and include the use of, e.g., multilayer YBCO structures where individual YBCO layers are separated by a layer of an insulating material such as CeO2 and the like, a layer of a conducting material such as strontium ruthenium oxide and the like or by a second superconducting material such as SmBCO and the like.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: May 7, 2002
    Assignee: The Regents of the University of California
    Inventors: Quanxi Jia, Stephen R. Foltyn
  • Use of 3,3'-diamino-4,4'-azoxyfurazan and 3,3'-diamino-4,4'-azofurazan as insensitive high explosive materials
    Patent number: 6358339
    Abstract: A method of preparing 3,3′-diamino-4,4′-azofurazan is provided together with a composition of matter including a mixture of 3,3′-diamino-4,4′-azofurazan and 1,3,5-triamino-2,4,6-trinitrobenzene.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: March 19, 2002
    Assignee: The Regents of the University of California
    Inventors: Michael A. Hiskey, David E. Chavez, Robert L. Bishop, John F. Kramer, Scott A. Kinkead
  • Preparation of 3,3?-azobis(6-amino-1,2,4,5-tetrazine)
    Patent number: 6342589
    Abstract: The compound of the structure where a, b, c, d and e are 0 or 1 and a+b+c+d+e is from 0 to 5 is disclosed together with the species 3,3′-azobis(6-amino-1,2,4,5-tetrazine) and a process of preparing such compounds.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: January 29, 2002
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Michael A. Hiskey, David E. Chavez, Darren Naud
  • Polymerization catalysts containing electron-withdrawing amide ligands
    Patent number: 6335303
    Abstract: The present invention describes methods of making a series of amine-containing organic compounds which are used as ligands for group 3-10 and lanthanide metal compounds. The ligands have electron-withdrawing groups bonded to them. The metal compounds, when combined with a cocatalyst, are catalysts for the polymerization of olefins.
    Type: Grant
    Filed: February 16, 2000
    Date of Patent: January 1, 2002
    Assignee: The Regents of the University of California
    Inventors: John G. Watkin, Damon R. Click
  • Chemical microsensors for detection of explosives and chemical warfare agents
    Patent number: 6316268
    Abstract: An article of manufacture is provided including a substrate having an oxide surface layer and a layer of a cyclodextrin derivative chemically bonded to said substrate, said layer of a cyclodextrin derivative adapted for the inclusion of selected compounds, e.g., nitro-containing organic compounds, therewith. Such an article can be a chemical microsensor capable of detecting a resultant mass change from inclusion of the nitro-containing organic compound.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: November 13, 2001
    Assignee: The Regents of the University of California
    Inventors: Xiaoguang Yang, Basil I. Swanson
  • Low-smoke pyrotechnic compositions
    Patent number: 6312537
    Abstract: A low-smoke producing pyrotechnic composition including a high-nitrogen content, low-carbon content energetic material, an oxidant and a colorant is disclosed together with the use of selected metal salts of a high-nitrogen content, low-carbon content energetic material as the colorant.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: November 6, 2001
    Assignee: The Regents of the University of California
    Inventors: Michael A. Hiskey, David E. Chavez, Darren L. Naud
  • Oriented conductive oxide electrodes on SiO2/Si and glass
    Patent number: 6312819
    Abstract: A thin film structure is provided including a silicon substrate with a layer of silicon dioxide on a surface thereof, and a layer of cubic oxide material deposited upon the layer of silicon dioxide by ion-beam-assisted-deposition, said layer of cubic oxide material characterized as biaxially oriented. Preferably, the cubic oxide material is yttria-stabilized zirconia. Additional thin layers of biaxially oriented ruthenium oxide or lanthanum strontium cobalt oxide are deposited upon the layer of yttria-stabilized zirconia. An intermediate layer of cerium oxide is employed between the yttria-stabilized zirconia layer and the lanthanum strontium cobalt oxide layer. Also, a layer of barium strontium titanium oxide can be upon the layer of biaxially oriented ruthenium oxide or lanthanum strontium cobalt oxide.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: November 6, 2001
    Assignee: The Regents of the University of California
    Inventors: Quanxi Jia, Paul N. Arendt
  • Cryogenic deformation of high temperature superconductive composite structures
    Patent number: 6300285
    Abstract: An improvement in a process of preparing a composite high temperature oxide superconductive wire is provided and involves conducting at least one cross-sectional reduction step in the processing preparation of the wire at sub-ambient temperatures.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: October 9, 2001
    Assignee: The Regents of the University of California
    Inventors: Peter R. Roberts, William Michels, John F. Bingert
  • Triggered optical biosensor
    Patent number: 6297059
    Abstract: An optical biosensor is provided for the detection of a multivalent target biomolecule, the biosensor including a substrate having a bilayer membrane thereon, a recognition molecule situated at the surface, the recognition molecule capable of binding with the multivalent target biomolecule, the recognition molecule further characterized as including a fluorescence label thereon and as being movable at the surface and a device for measuring a fluorescence change in response to binding between the recognition molecule and the multivalent target biomolecule.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: October 2, 2001
    Assignee: The Regents of the University of California
    Inventors: Xuedong Song, Basil I. Swanson
  • Depth enhancement of ion sensitized data
    Patent number: 6230071
    Abstract: A process of fabricating a durable data storage medium is disclosed, the durable data storage medium capable of storing, digital or alphanumeric characters as well as graphical shapes or characters. Additionally, a durable data storage medium including a substrate having etched characters therein is disclosed, the substrate characterized as containing detectable residual amounts of ions used in the preparation process.
    Type: Grant
    Filed: May 24, 1996
    Date of Patent: May 8, 2001
    Assignee: The Regents of the University of California
    Inventor: Bruce C. Lamartine
  • Low-smoke pyrotechnic compositions
    Patent number: 6214139
    Abstract: A low-smoke producing pyrotechnic composition including a high-nitrogen content, low-carbon content energetic material, an oxidant and a colorant is disclosed together with the use of selected metal salts of a high-nitrogen content, low-carbon content energetic material as the colorant.
    Type: Grant
    Filed: April 20, 1999
    Date of Patent: April 10, 2001
    Assignee: The Regents of the University of California
    Inventors: Michael A. Hiskey, David E. Chavez, Darren L. Naud
  • Thermally tolerant multilayer metal membrane
    Patent number: 6214090
    Abstract: A composite metal membrane including a first metal layer of a Group IVB or Group VB metal sandwiched between two layers of a Group VIIIB metal selected from the group consisting of palladium, platinum, nickel, rhodium, iridium, cobalt, and alloys thereof, and a non-continuous layer of a metal chalcogenide upon one layer of the Group VIIIB metal is disclosed together with a process for the recovery of hydrogen from a gaseous mixture using such a composite membrane and a process for forming such a composite metal membrane.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: April 10, 2001
    Assignee: The Regents of the University of California
    Inventors: Robert C. Dye, Ronny C. Snow
  • Lithium tantalate single-crystal and photo-functional device
    Patent number: 6211999
    Abstract: Provided are lithium tantalate single-crystal that requires a low voltage of not larger than 10 kV/mm for its ferroelectric polarization inversion and of which the polarization can be periodically inverted with accuracy even at such a low voltage, and a photo-functional device comprising the crystal. The crystal has a molar fraction of Li2O/(Ta2O5+Li2O) of falling between 0.492 and 0.50. The functional device can convert a laser ray being incident thereon or can be used as a physical memory.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: April 3, 2001
    Assignee: The Regents of the University of California
    Inventors: Venkatraman Gopalan, Terence E. Mitchell, Kenji Kitamura, Yasunori Furukawa
  • Compressive annealing of superconductive tapes
    Patent number: 6195870
    Abstract: Superconductor tapes are annealed under uniaxial pressure, such a compressive annealing yielding significant improvement in the resultant critical current density. This thermomechanical processing technique obtains improved critical currents with fewer processing steps.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: March 6, 2001
    Assignee: The Regents of the University of California
    Inventors: Yuntian T. Zhu, Patrick S. Baldonado, John F. Bingert, Terry G. Holesinger, Dean E. Peterson
  • Lithium niobate single-crystal and photo-functional device
    Patent number: 6195197
    Abstract: Provided are lithium niobate single-crystal that requires a low voltage of not larger than 10 kV/nm for its ferroelectric polarization inversion and of which the polarization can be periodically inverted with accuracy even at such a low voltage, and a photo-functional device comprising the crystal. The crystal has a molar fraction of Li2O/(Nb2O5+Li2O) of falling between 0.49 and 0.52. The photo-functional device can convert a laser ray being incident thereon.
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: February 27, 2001
    Assignee: The Regents of the University of California
    Inventors: Venkatraman Gopalan, Terrence E. Mitchell, Kenji Kitamura, Yasunori Furukawa
  • Supported metal alloy catalysts
    Patent number: 6132695
    Abstract: A process of preparing a Group IV, V, or VI metal carbonitride including reacting a Group IV, V, or VI metal amide complex with ammonia to obtain an intermediate product; and, heating the intermediate product to temperatures and for times sufficient to form a Group IV, V, or VI metal carbonitride is provided together with the product of the process and a process of reforming an n-alkane by use of the product.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: October 17, 2000
    Assignee: The Regents of the University of California
    Inventors: Joseph Barrera, David C. Smith
  • Gate-and emitter array on fiber electron field emission structure
    Patent number: 6124670
    Abstract: A unified fibrous field emission element is provided including a conductive fibrous central core element having an insulating material directly thereon the conductive fibrous central core element and a gate electrode directly thereon the insulating material, the conductive fibrous central core element further including emission sites situated longitudinally along the length of the conductive fibrous central core element.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: September 26, 2000
    Assignee: The Regents of the University of California
    Inventor: Steven M. Valone
  • High temperature superconducting composite conductor and method for manufacture of same
    Patent number: 6122534
    Abstract: A process for increasing the resistivity of a HTS oxide composite sheath including heating a superconductive HTS oxide composite, the composite including a sheath including silver, in the presence of mercury at temperatures sufficient to form a silver--mercury alloy is provided together with a HTS oxide composite which includes a high temperature superconductor oxide core surrounded by a metallic sheath, the metallic sheath including silver and mercury.Also provided is a process for preparing a HTS oxide composite having an enhanced transport critical current density including placing the HTS oxide composite within a sealed, evacuated container, and, heating the HTS oxide composite for time and at temperatures sufficient for enhancement of transport critical current density in comparison to the transport critical current density of the HTS oxide composite prior to the heating.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: September 19, 2000
    Assignee: The Regents of the Univeristy of California
    Inventors: Gilbert N. Riley, Jr., James D. Cotton, Terry G. Holesinger
  • Pressure polymerization of polyester
    Patent number: 6111064
    Abstract: A process is disclosed for the preparation of a polyester polymer or polyester copolymer under superatmospheric pressure conditions in a pipe or tubular reaction under turbannular flow conditions. Reaction material having a glycol equivalents to carboxylic acid equivalents mole ratio of from 1.0:1 to 1.2:1, together with a superatmospheric dense gaseous medium are fed co-currently to the reactor. Dicarboxylic acid and/or diol raw materials may be injected into any of the reaction zones in the process during operation to achieve the overall desired mole ratio balance. The process operates at temperatures of from about 220.degree. C. to about 320.degree. C., with turbannular flow achieved before the polymer product and gas exit the reactor process. The pressure in the reaction zones can be in the range from 15 psia to 2500 psia.
    Type: Grant
    Filed: June 3, 1999
    Date of Patent: August 29, 2000
    Assignee: The Regents of the University of California
    Inventors: Charles J. Maurer, Gordon Shaw, Vicky S. Smith, Steven J. Buelow, William Tumas, Veronica Contreras, Ronald J. Martinez