Patents Represented by Attorney Armand McMillan

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  • Bismaleimide compounds
    Patent number: 4564683
    Abstract: Bismaleimides of the formula ##STR1## wherein R.sub.1 and R.sub.2 each independently is H, C.sub.1-4 -alkyl, C.sub.1-4 -alkoxy, C1 or Br, orR.sub.1 and R.sub.2 together form a fused 6-membered hydrocarbon aromatic ring,with the proviso that R.sub.1 and R.sub.2 are not t-butyl or t-butoxy;X is O, S or Se;n is 1-3; andthe alkylene bridging group, optionally, is substituted by 1-3 methyl groups or by fluorine,form polybismaleimide resins which have valuable physical properties.Uniquely, these compounds permit extended cure times, i.e., they remain fluid for a time sufficient to permit the formation of a homogeneous melt prior to curing.
    Type: Grant
    Filed: April 10, 1984
    Date of Patent: January 14, 1986
    Assignee: The United States of America as Represented by the United States Department of Energy
    Inventors: Johnnie E. Adams, Donald R. Jamieson
  • Method for production of free-standing polycrystalline boron phosphide film
    Patent number: 4550014
    Abstract: A process for producing a free-standing polycrystalline boron phosphide film comprises growing a film of boron phosphide in a vertical growth apparatus on a metal substrate. The metal substrate has a coefficient of thermal expansion sufficiently different from that of boron phosphide that the film separates cleanly from the substrate upon cooling thereof, and the substrate is preferably titanium. The invention also comprises a free-standing polycrystalline boron phosphide film for use in electronic device fabrication.
    Type: Grant
    Filed: September 9, 1982
    Date of Patent: October 29, 1985
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Richard J. Baughman, David S. Ginley
  • Pressurized heat treatment of glass-ceramic to control thermal expansion
    Patent number: 4536203
    Abstract: A method of producing a glass-ceramic having a specified thermal expansion value is disclosed. The method includes the step of pressurizing the parent glass material to a predetermined pressure during heat treatment so that the glass-ceramic produced has a specified thermal expansion value. Preferably, the glass-ceramic material is isostatically pressed. A method for forming a strong glass-ceramic to metal seal is also disclosed in which the glass-ceramic is fabricated to have a thermal expansion value equal to that of the metal. The determination of the thermal expansion value of a parent glass material placed in a high-temperature environment is also used to determine the pressure in the environment.
    Type: Grant
    Filed: April 19, 1984
    Date of Patent: August 20, 1985
    Assignee: The United States of America as represented by the Department of Energy
    Inventor: Daniel P. Kramer
  • Rigid zeolite containing polyurethane foams
    Patent number: 4518718
    Abstract: A closed cell rigid polyurethane foam has been prepared which contains up to about 60% by weight of molecular sieves capable of sorbing molecules with effective critical diameters of up to about 10 .ANG.. The molecular sieve component of the foam can be preloaded with catalysts or with reactive compounds that can be released upon activation of the foam to control and complete crosslinking after the foam is formed. The foam can also be loaded with water or other flame-retarding agents, after completion. Up to about 50% of the weight of the isocyanate component of the foam can be replaced by polyimide resin precursors for incorporation into the final polymeric network.
    Type: Grant
    Filed: May 18, 1984
    Date of Patent: May 21, 1985
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Charles B. Frost
  • Method of gas purification and system therefor
    Patent number: 4512960
    Abstract: A method and device for conducting gettering. The gettering is conducted with one of an LiB, LiSi or LiAl system. Preferably the LiB system is of the formula Li.sub.x B.sub.1-x wherein 0<x<1 with gettering conducted at room or slightly elevated temperature of about 100.degree.-200.degree. C.
    Type: Grant
    Filed: December 29, 1983
    Date of Patent: April 23, 1985
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Raphael Szwarc
  • Catalysis using hydrous metal oxide ion exchanges
    Patent number: 4511455
    Abstract: In a process which is catalyzed by a catalyst comprising an active metal on a carrier, said metal being active as a catalyst for the process, an improvement is provided wherein the catalyst is a hydrous, alkali metal or alkaline earth metal titanate, zirconate, niobate or tantalate wherein alkali or alkaline earth metal cations have been exchanged with a catalytically effective amount of cations of said metal.
    Type: Grant
    Filed: April 10, 1984
    Date of Patent: April 16, 1985
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Robert G. Dosch, Howard P. Stephens, Frances V. Stohl
  • Chromium (V) compounds as cathode material in electrochemical power sources
    Patent number: 4508796
    Abstract: A cathode for use in a thermal battery, comprising a chromium (V) compound. The preferred materials for this use are Ca.sub.5 (CrO.sub.4).sub.3 Cl, Ca.sub.5 (CrO.sub.4).sub.3 OH, and Cr.sub.2 O.sub.5. The chromium (V) compound can be employed as a cathode material in ambient temperature batteries when blended with a suitably conductive filler, preferably carbon black.
    Type: Grant
    Filed: April 21, 1983
    Date of Patent: April 2, 1985
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Frank M. Delnick, Ronald A. Guidotti, David K. McCarthy
  • Electrically conductive rigid polyurethane foam
    Patent number: 4505973
    Abstract: A rigid, polyurethane foam comprises about 2-10 weight percent, based on the total foam weight, of a carbon black which is CONDUCTEX CC-40-220 or CONDUCTEX SC, whereby the rigid polyurethane foam is electrically conductive and has essentially the same mechanical properties as the same foam without carbon black added.
    Type: Grant
    Filed: December 8, 1983
    Date of Patent: March 19, 1985
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Thomas E. Neet, David A. Spieker
  • Direct metal brazing to cermet feedthroughs
    Patent number: 4488673
    Abstract: An improved method for brazing metallic components to a cermet surface in an alumina substrate eliminates the prior art metallized layer over the cermet via and adjoining alumina surfaces. Instead, a nickel layer is applied over the cermet surface only and metallic components are brazed directly to this nickel coated cermet surface. As a result, heretofore unachievable tensile strength joints are produced. In addition, cermet vias with their brazed metal components can be spaced more closely in the alumina substrate because of the elimination of the prior art metallized alumina surfaces.
    Type: Grant
    Filed: July 29, 1982
    Date of Patent: December 18, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Albert C. Hopper, Jr.
  • Decontaminating metal surfaces
    Patent number: 4481090
    Abstract: Radioactively contaminated surfaces can be electrolytically decontaminated with greatly increased efficiencies by using electrolytes containing higher than heretofore conventional amounts of nitrate, e.g.,>600 g/l of NaNO.sub.3, or by using nitrate-containing electrolytes which are acidic, e.g., of a pH<6.
    Type: Grant
    Filed: January 23, 1984
    Date of Patent: November 6, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Everett L. Childs
  • High temperature adhesive silicone foam composition, foam generating system and method of generating foam
    Patent number: 4476159
    Abstract: Access to a space is impeded by generation of a sticky foam from a silicone polymer and a low boiling solvent such as a halogenated hydrocarbon. In a preferred aspect, the formulation is polydimethylsiloxane gel mixed with F502 Freon as a solvent and blowing agent, and pressurized with CO.sub.2 in a vessel to about 250 PSI, whereby when the vessel is opened, a sticky and solvent resistant foam is deployed. The foam is deployable, over a wide range of temperatures, adhering to wet surfaces as well as dry, is stable over long periods of time and does not propagate flame or lose adhesive properties during an externally supported burn.
    Type: Grant
    Filed: December 21, 1983
    Date of Patent: October 9, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Judith W. Mead, Orelio J. Montoya, Peter B. Rand, Vernon O. Willan
  • Low temperature process for obtaining thin glass films
    Patent number: 4476156
    Abstract: A method for coating a substrate with a glass-like film comprises,applying to the substrate an aqueous alcoholic solution containing a polymeric network of partially hydrolyzed metal alkoxide into which network there is incorporated finely powdered glass, whereby there is achieved on the substrate a coherent and adherent initial film; andheating said film to a temperature sufficient to melt said powdered glass component, thereby converting said initial film to a final densified film.
    Type: Grant
    Filed: March 10, 1983
    Date of Patent: October 9, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: C. Jeffrey Brinker, Scott T. Reed
  • Integral low-energy thermite igniter
    Patent number: 4464989
    Abstract: In a thermite igniter/heat source comprising a container holding an internal igniter load, there is provided the improvement wherein the container consists essentially of consumable consolidated thermite having a low gas output upon combustion, whereby upon ignition, substantially all of the container and said load is consumed with low gas production.
    Type: Grant
    Filed: May 13, 1983
    Date of Patent: August 14, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Albert Gibson, Lowell D. Haws, Jonathan H. Mohler
  • Delayed cure bismaleimide resins
    Patent number: 4464520
    Abstract: Polybismaleimides prepared by delayed curing of bis-imides having the formula ##STR1## wherein R.sub.1 and R.sub.2 each independently is H, C.sub.1-4 -alkyl, C.sub.1-4 -alkoxy, Cl or Br, orR.sub.1 and R.sub.2 together form a fused 6-membered hydrocarbon aromatic ring, with the proviso that R.sub.1 and R.sub.2 are not t-butyl or t-butoxy;X is O, S or Se;n is 1-3; andthe --(CH.sub.2).sub.n -- group, optionally, is substituted by 1-3 methyl groups or by fluorine.
    Type: Grant
    Filed: August 12, 1982
    Date of Patent: August 7, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Johnnie E. Adams, Donald R. Jamieson
  • Chemically durable nitrogen containing phosphate glasses useful for sealing to metals
    Patent number: 4455384
    Abstract: The chemical durability of alkali phosphate glasses is improved by incorporation of up to 23 weight percent of nitrogen. A typical phosphate glass contains: 10 to 60 mole % of Li.sub.2 O, Na.sub.2 O or K.sub.2 O; 5-40 mole % of BaO or CAO; 0-1 to 10 mole % of Al.sub.2 O.sub.3 ; and 40-70 mole % of P.sub.2 O.sub.5. Nitrides, such as AlN, are the favored additives.
    Type: Grant
    Filed: December 8, 1982
    Date of Patent: June 19, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Delbert E. Day, James A. Wilder, Jr.
  • Method and composition for molding low density desiccant syntactic foam articles
    Patent number: 4447565
    Abstract: A method and a composition are provided for molding low density desiccant syntactic foam articles. A low density molded desiccant article may be made as a syntactic foam by blending a thermosetting resin, microspheres and molecular sieve desiccant powder, molding and curing. Such articles have densities of 0.2-0.9 g/cc, moisture capacities of 1-12% by weight, and can serve as light weight structural supports.
    Type: Grant
    Filed: December 7, 1981
    Date of Patent: May 8, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: James W. Lula, James R. Schicker
  • Stabilized aqueous foam systems and concentrate and method for making them
    Patent number: 4442018
    Abstract: This invention comprises a combination of a water soluble polymer of the polyacrylic acid type, a foam stabilizer of dodecyl alcohol, a surfactant, a solvent and water as a concentrate for use in producing stabilized aqueous foams. In another aspect, the invention comprises a solution of the concentrate with water. In still another aspect the invention includes a method of generating stabilized aqueous foams.
    Type: Grant
    Filed: November 1, 1982
    Date of Patent: April 10, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Peter B. Rand
  • Photoelectrochemical cell having photoanode with thin boron phosphide coating as a corrosion resistant layer
    Patent number: 4438183
    Abstract: A surface prone to corrosion in corrosive environments is rendered anticorrosive by CVD growing a thin continuous film, e.g., having no detectable pinholes, thereon, of boron phosphide. In one embodiment, the film is semiconductive. In another aspect, the invention is an improved photoanode, and/or photoelectrochemical cell with a photoanode having a thin film of boron phosphide thereon rendering it anitcorrosive, and providing it with unexpectedly improved photoresponsive properties.
    Type: Grant
    Filed: August 25, 1982
    Date of Patent: March 20, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Richard J. Baughman, David S. Ginley
  • Annealed CVD molybdenum thin film surface
    Patent number: 4431708
    Abstract: Molybdenum thin films deposited by pyrolytic decomposition of Mo(CO).sub.6 attain, after anneal in a reducing atmosphere at temperatures greater than 700.degree. C., infrared reflectance values greater than reflectance of supersmooth bulk molybdenum. Black molybdenum films deposited under oxidizing conditions and annealed, when covered with an anti-reflecting coating, approach the ideal solar collector characteristic of visible light absorber and infrared energy reflector.
    Type: Grant
    Filed: December 19, 1979
    Date of Patent: February 14, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Gary E. Carver, Bernhard O. Seraphin
  • Process for the synthesis of iron powder
    Patent number: 4414021
    Abstract: A process for preparing iron powder suitable for use in preparing the iron-potassium perchlorate heat-powder fuel mixture used in thermal batteries, comprises preparing a homogeneous, dense iron oxide hydroxide precipitate by homogeneous precipitation from an aqueous mixture of a ferric salt, formic or sulfuric acid, ammonium hydroxide and urea as precipitating agent; and then reducing the dense iron oxide hydroxide by treatment with hydrogen to prepare the iron powder.
    Type: Grant
    Filed: May 6, 1982
    Date of Patent: November 8, 1983
    Inventor: William W. Welbon