Patents Examined by Leland A. Sebastian
  • Patent number: 5488076
    Abstract: A paint for application to the exterior surface of waterborne vehicles indes a high molecular weight water soluble polymer with drag reducing properties which time releases into the fluid boundary layer immediately adjacent the vehicle surface to reduce turbulence and promote laminar flow.
    Type: Grant
    Filed: August 8, 1973
    Date of Patent: January 30, 1996
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Robert F. Supcoe, Francis J. Moran, Jr.
  • Patent number: 4562017
    Abstract: There is described a process for the production of ceramic fuel pellets which contain fission and/or fertile material in oxidized form, by heating porous green fuel pellets in a reducing atmosphere to a temperature below 2500.degree. C., molding in a die, ejecting from the die and cooling the finished pellets. Thereby the heating and cooling is carried out stepwise whereby the heating and cooling speed below 1200.degree. C. is less than 30.degree. C./second and above 1200.degree. C. is greater than 30.degree. C./second.
    Type: Grant
    Filed: September 14, 1983
    Date of Patent: December 31, 1985
    Assignee: Nukem GmbH
    Inventors: Milan Hrovat, Hans Huschka, Lothar Rachor, Dieter Vollath
  • Patent number: 4539175
    Abstract: The method of consolidating a metallic, metallic and ceramic, or ceramic body in any of initially powdered, sintered, fibrous, sponge, or other form capable of compaction, includes the steps:(a) providing a bed of flowable particles within a contained zone, the particulate primarily including flowable and resiliently compressible carbonaceous particles,(b) positioning that body in the bed,(c) and effecting pressurization of the bed to cause pressure transmission via the particles to the body, thereby to compact the body into desired shape, increasing its density.
    Type: Grant
    Filed: September 26, 1983
    Date of Patent: September 3, 1985
    Assignee: Metal Alloys Inc.
    Inventors: Wayne P. Lichti, Alfred F. Hofstatter
  • Patent number: 4535193
    Abstract: A composition comprising 1,4,6,9-tetranitrodiamantane, and process for its reparation are disclosed.
    Type: Grant
    Filed: March 5, 1984
    Date of Patent: August 13, 1985
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Gilbert P. Sollott, Everett E. Gilbert
  • Patent number: 4526616
    Abstract: A load-bearing thermal insulator, for example a brake piston thrust transmission element, which comprises platelets or flakes of thermally insulating material dispersed in a metal matrix and oriented normal to the direction of heat flow so as to impede the flow of heat through the matrix in one direction.
    Type: Grant
    Filed: July 12, 1983
    Date of Patent: July 2, 1985
    Assignee: Dunlop Limited
    Inventors: Thomas G. Fennell, Ronald Fisher
  • Patent number: 4525429
    Abstract: New porous semiconductor dopant carriers are disclosed together with a method for the diffusion doping of semiconductors by the vapor phase transport of an n or p type dopant, such as phosphorus, arsenic, antimony, boron, gallium, aluminum, zinc, silicon, tellurium, tin and cadmium to the semiconductor host substrate; wherein the dopant source comprises a dopant containing porous, inert, rigid dimensionally stable and thermal shock resistant carrier comprised of SiC, elemental silicon or mixtures thereof.
    Type: Grant
    Filed: June 8, 1983
    Date of Patent: June 25, 1985
    Assignee: Kennecott Corporation
    Inventors: Gregory A. Kaiser, Gabriel P. DeMunda, Richard E. Tressler
  • Patent number: 4524226
    Abstract: A process for selectively forming nitro compounds by contacting, at elevated temperature and pressure and in a homogeneous gas phase, an aldehyde having from two to ten carbon atoms with nitrogen dioxide alone or in the presence of oxygen and/or water.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: June 18, 1985
    Assignee: W. R. Grace & Co.
    Inventors: Shu-Chieh P. Wang, Martin B. Sherwin
  • Patent number: 4521639
    Abstract: Disclosed herein is a repeating use thermocouple assembly and method of making the same in which a cavity adjacent the tip of the thermocouple is filled with a thermosetting foundry sand and baked in place to provide support for the thermocouple tube without causing stresses during use which could cause breakage of the thermocouple tube.
    Type: Grant
    Filed: October 31, 1983
    Date of Patent: June 4, 1985
    Inventor: Richard A. Falk
  • Patent number: 4518563
    Abstract: A method for manufacturing a slide member by molding an alloy powder composed of, by weight, from 2.5 to 7.5% of Cr, from 0.1 to 3.0% of Mn, from 0.2 to 0.8% of P, from 1.0 to 5.0% of Cu, from 0.5 to 2.0% of Si, from 0 to 3% of Mo, from 1.5 to 3.5% of C, and the balance being Fe with less than 2.0% of impurities into a compressed powder mass under a molding product pressure of 5 to 7 ton/cm.sup.2 ; sintering the compressed powder mass at a temperature of 1020.degree. to 1180.degree. C. to produce a sintered alloy mass; treating the sintered alloy mass for 0.5 to 3 hours by soaking the sintered alloy mass at a temperature from 450.degree. to 550.degree. C. under a reduced pressure of 0.1 to 0.8 atm. while exposing the sintered alloy mass to a gas, the gas having a main component selected from the group consisting of a non-oxidizing type gas and an endothermic type gas, and containing 20 to 40 vol.
    Type: Grant
    Filed: May 17, 1984
    Date of Patent: May 21, 1985
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tetsuya Suganuma, Koji Kazuoka
  • Patent number: 4518811
    Abstract: A reactor for nitration of saturated hydrocarbons having less than five con atoms, alone or in admixture, in the gaseous phase under pressure is made up of a reaction enclosure, in which a tube or pipe bank is in contact with a heated fluid of high heat-exchange capacity. The inside perimeter of the tubes does not exceed 800 mm, and if circular not in excess of 250 mm, and the ratio of the surface of the tube bank, in contact with the reaction medium, to the volume of the reaction enclosure is 1:1 to 3:1.The reactor apparatus further includes a mechanical means to uniformly distribute the delivery of reaction medium gases to the various tubes of the bank so that the load difference between the most loaded tube and that of the least loaded tube is equal to 10% at the most.The reactor also includes a tube bank injector which feeds the tube bank to assure homogeneous mixing of all the reaction fluids in the tube bank.
    Type: Grant
    Filed: September 15, 1983
    Date of Patent: May 21, 1985
    Assignee: Societe Chimique de la Grande Paroisse - Azote et Products Chimiques
    Inventors: Pierre Lhonore, Jacques Quibel, Bernard Jacquinot, Yvon Jestin, Robert Pelletier
  • Patent number: 4518812
    Abstract: In the conjugated nitrofluorination of an olefin by reacting an olefin of the formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each independently is hydrogen, fluorine, chlorine, bromine, alkyl, halogenoalkyl or cycloalkyl, orR.sup.2 and R.sup.4 together are an alkylene radical of 3 to 6 carbon atoms,with hydrogen fluoride and nitric acid to produce an .alpha.-fluorinated nitroalkane of the formula ##STR2## the improvement which comprises effecting the reaction in a vessel protected against corrosion employing about 1 to 1.1 mols of hydrogen fluoride and about 1 to 2 mols of nitric acid per mol of olefin. The process uses much less HF than heretofore and the products are useful intermediates in making herbicides. Some of the products are new.
    Type: Grant
    Filed: January 31, 1984
    Date of Patent: May 21, 1985
    Assignee: Bayer Aktiengesellschaft
    Inventors: Bernd Baasner, Hermann Hagemann, Erich Klauke
  • Patent number: 4517394
    Abstract: A process for selectively forming nitroalkanes and nitroaromatics by contacting, at elevated temperature and pressure and in a homogeneous gas phase, an organic carboxylic acid having from two to ten carbon atoms with NO.sub.2 alone or in the presence of oxygen and/or water.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: May 14, 1985
    Assignee: W. R. Grace & Co.
    Inventors: Shu-Chieh P. Wang, Martin B. Sherwin
  • Patent number: 4517114
    Abstract: The subject invention relates to compositions which inhibit the corrosion caused by CO.sub.2 and H.sub.2 S in the transport and storage of crude oils, which are generally water-in-oil, in particular salt-water-in-oil emulsions. The corrosion inhibitors are mixtures of certain imidazoline or tetrahydropyrimidine derivatives, precursors thereof, or their complexes with sulfur and certain maleinamidic acids.
    Type: Grant
    Filed: August 26, 1983
    Date of Patent: May 14, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Knut Oppenlaender, Karl Stork, Klaus Barthold
  • Patent number: 4517393
    Abstract: A process for selectively forming nitro compounds by contacting, at elevated temperature and pressure and in a homogeneous gas phase, a ketone having from three to ten carbon atoms with nitrogen dioxide alone or in the presence of oxygen and/or water.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: May 14, 1985
    Assignee: W. R. Grace & Co.
    Inventors: Shu-Shieh P. Wang, Martin B. Sherwin
  • Patent number: 4517155
    Abstract: Copper end terminations of excellent electrical and mechanical properties are provided on multielectrode ceramic capacitors by applying copper, glass frit metallizations to the ends of a ceramic capacitor and firing the applied metallization in an atmosphere of nitrogen which contains a controlled partial pressure of oxygen.
    Type: Grant
    Filed: May 3, 1984
    Date of Patent: May 14, 1985
    Assignee: Union Carbide Corporation
    Inventors: Sri Prakash, William B. Snyder, Jr.
  • Patent number: 4517101
    Abstract: In a polymer flood, where bacterial contamination frequently causes a loss in viscosity of the polymer, the viscosity of the polymer solution is maintained by the use of a xanthan polymer modified by methylation of a portion of the subunit sugar residues of the xanthan base.
    Type: Grant
    Filed: August 22, 1983
    Date of Patent: May 14, 1985
    Inventors: David Williams, Douglas M. Munnecke
  • Patent number: 4517392
    Abstract: A process for selectively forming nitro compounds by contacting, at elevated temperature and pressure and in a homogeneous gas phase, an alcohol having from two to ten carbon atoms with nitrogen dioxide alone or in the presence of oxygen and/or water.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: May 14, 1985
    Assignee: W. R. Grace & Co.
    Inventors: Shu-Chieh P. Wang, Martin B. Sherwin
  • Patent number: 4514341
    Abstract: A liquid epoxy plasticizer is added to a bulk quantity of nitroglycerin to ender the same stable in storage and to enhance its safety relative explosion.
    Type: Grant
    Filed: April 19, 1984
    Date of Patent: April 30, 1985
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: H. William Voigt
  • Patent number: 4514320
    Abstract: This invention relates to non-halogen salts of nitrogen and/or nitrogen-sulfur heterocyclics as corrosion inhibitors for stainless steel-containing systems. These are more effective as corrosion inhibitors when employed in combination with surfactants, preferably of the non-ionic type such as oxyalkylates.
    Type: Grant
    Filed: March 12, 1984
    Date of Patent: April 30, 1985
    Assignee: Petrolite Corporation
    Inventor: Patrick M. Quinlan
  • Patent number: 4514327
    Abstract: This invention is a fire retardant compound and the method for preparing the same. The combined fire retardant properties of the final composition are greater than the fire retardant properties of the individual ingredients. When formulated and treated in accordance with the present invention, wood products such as paneling and flooring, fabric products such as cotton, wool and rayon and the like which are normally flammable are for all practical purposes noncombustible. Not only are the flame retardant properties of the present invention highly unusual but also the smoke inhibiting factor in each case is extremely low and way below that which would normally be anticipated.
    Type: Grant
    Filed: January 10, 1983
    Date of Patent: April 30, 1985
    Inventor: James E. Rock