Patents Examined by William R. Dixon, Jr.
  • Patent number: 5891815
    Abstract: Multiphase ceramic composites containing 47% to 52% by weight aluminum nitride, 23% to 27% by weight silica, 3% to 7% alumina and the balance boron nitride wherein the boron nitride is one phase in the composition and the reaction products of aluminum nitride, silica and alumina are the other phase in the composite. The boron nitride phase is uniformly distributed in the form of discrete particles throughout the reaction products of aluminum nitride, silica and alumina. A window transparent to electromagnetic radiation in a predetermined frequency spectrum is made by forming a homogeneous, finely-divided mixture of the foregoing composite and compacting the homogeneous, finely-divided mixture at an elevated temperature and pressure for a sufficient time to form reaction products of the aluminum nitride, silica and alumina. In preferred embodiments, the homogeneous, finely-divided mixture of aluminum nitride, silica, boron nitride and alumina is densified at a temperature of 1760.degree. C.
    Type: Grant
    Filed: December 21, 1988
    Date of Patent: April 6, 1999
    Assignee: Lockheed Martin Corporation
    Inventors: Gerald C. Dodds, Richard A. Tanzilli
  • Patent number: 5422319
    Abstract: Novel oxide coatings which can be conveniently applied to reinforcing fibers such as silicon carbide fibers, and which when introduced as a fiber coating into fiber reinforced ceramic matrix composites provide composites exhibiting improved resistance to embrittlement at high temperatures, are described. Oxides effective to provide the improved composites in accordance with the invention include CeO.sub.2 and ZrO.sub.2.
    Type: Grant
    Filed: September 9, 1988
    Date of Patent: June 6, 1995
    Assignee: Corning Incorporated
    Inventors: John L. Stempin, Dale R. Wexell
  • Patent number: 5275633
    Abstract: A cutting body is formed of compacted powder and has a lower side provided with a recess and a spaced protrusion. The body can be used as a cutting insert, or two identical such bodies can be sintered together to form an invertible cutting insert. Voids can be formed within the insert to contain sensors or conduct cooling fluid.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: January 4, 1994
    Assignee: Sandvik AB
    Inventors: Jan-Erik Johansson, Stig E. V. Lagerberg, Lars T. Pettersson
  • Patent number: 5260125
    Abstract: A coating composition for use with ceramic composites to reduce gas permeability of the composites as well as provide an adhesive force to the composites. The composite contains a base fabric of aluminoborosilicate fibers coated with first a carbonaceous layer, followed by a layer of silicon carbide, and a layer of a mixture of silicon carbide, aluminum phosphate, and aluminoborosilicate particles.
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: November 9, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Jane S. Copes
  • Patent number: 5240500
    Abstract: A joint compound for use with an apparatus for taping joints between pieces of wallboard comprises 35-60% by weight of a gypsum base plaster; from about 30-70% by weight of an alcohol-water mixture; 10-25% by weight of polyvinyl acetate; and optionally from about 0-5% by weight of polyvinyl alcohol. The alcohol-water mixture comprises from about 0-30% by weight of water.
    Type: Grant
    Filed: May 3, 1991
    Date of Patent: August 31, 1993
    Inventor: Kahrl L. Retti
  • Patent number: 5236493
    Abstract: An antifouling coating composition comprising a binder comprising a non-volatile amine and rosin or maleinised or fumarised rosin. The non-volatile amine is preferably an amine of the formula I ##STR1## where R.sup.1 is a monovalent hydrocarbon group derived from a diterpene and R.sup.2 and R.sup.3 are hydrogen, alkyl or aryl, preferably present in a proportion by weight of 9:1 to 1:9 relative to the rosin or maleinised or fumarised rosin.
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: August 17, 1993
    Assignee: Courtaulds Coatings (Holdings) Limited
    Inventors: Julian E. Hunter, James Reid, David E. J. Arnold, George Hails, deceased, Kenneth F. Baxter
  • Patent number: 5236498
    Abstract: This invention relates to quinacridone solid solutions containing(a) 95% to 5% by weight of 2,9-dimethoxyquinacridone, and (b) 5% to 95% by weight of 2,9-dichloroquinacridone, characterized by X-ray diffraction patterns that are different from the sum of the X-ray diffraction patterns of the individual quinacridone components. The invention further relates to the use of such solid solutions for pigmentation of fibers, plastics, coatings, printing inks, and the like.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: August 17, 1993
    Assignee: Miles Inc.
    Inventors: Charles G. Zaloum, Michael J. Greene
  • Patent number: 5230718
    Abstract: Coated abrasive grains and a manufacturing method for them are disclosed. The abrasive grains are coated using an immersion method with a coating comprising at least one substance selected from carbides, borides, and nitrides of a metal, comprising: preparing an immersion bath comprising a molten salt bath containing said metal; and immersing abrasive grains to be treated in said immersion bath for a suitable length of time.
    Type: Grant
    Filed: March 23, 1992
    Date of Patent: July 27, 1993
    Assignees: Takeo Oki, Noritake Co., Ltd.
    Inventors: Takeo Oki, Yoichi Fukuta, Eiichi Hisada, Satoshi Aoki
  • Patent number: 5231059
    Abstract: A process for preparing an oxidation resistant black glass having the empirical formula SiC.sub.x O.sub.y, wherein 0<x.ltoreq.2.0 and 0<y.ltoreq.2.2. The process comprises reacting cyclosiloxane monomers to effect the bonding of one vinyl carbon atom to a silicon, curing the product at not greater than 250.degree. C., and pyrolyzing at about 800.degree.-1400.degree. C. in an atmosphere containing a sufficient amount of oxygen to reduce the carbon content of the black glass to a desired level.
    Type: Grant
    Filed: September 21, 1990
    Date of Patent: July 27, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Roger Y. Leung, Stephen T. Gonczy
  • Patent number: 5223028
    Abstract: A waterfast ink having 3.0% Food Black 2, 2.5% highly hydroxyethylated polyethyleneimine, 10.0% ammonium benzoate, and the balance water. The invention appears to function upon loss of water after printing by a polar neutralizing between the dye and the polyimine, which results in an affinity of the dye to paper. It is applicable to any dye having anionic solubilizing groups but not having quaternary ammonium and to any ammonium salt.
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: June 29, 1993
    Assignee: Lexmark International, Inc.
    Inventors: Rodney O. Aulick, Bradley L. Beach, Terence E. Franey, James M. Mrvos, Ann M. Piekunka, Jerry F. Stone
  • Patent number: 5217946
    Abstract: Superconductors having a composition Bi.sub.2-a-b-c Sn.sub.a Pb.sub.b Sb.sub.c Sr.sub.2 Ca.sub.n-1 Cu.sub.n O.sub.2n+4 can be made by firing the appropriate mixtures of designated oxides or carbonates. In the composition a=about 0.001-0.4, b about 0-0.4, c about 0-0.4, and n 2 or 3. The addition of Sn improves the superconductive properties of comparable compositions that lack Sn. For example, Bi.sub.1.6 Sn.sub.0.4 Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.x (x=ca 10), calcined at 830.degree. C. for 15 hours shows superconductivity by magnetic susceptibility tests at about 77.degree. K. whereas Bi.sub.2 Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.10 prepared under the same conditions but lacking Sn, shows nothing at this temperature.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: June 8, 1993
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Leonard E. Dolhert
  • Patent number: 5216437
    Abstract: An ink that includes a liquid medium and a dye represented by the following Formula (I): ##STR1## wherein M represents a cation selected from an alkali metal, ammonium, and an organic ammonium; R.sub.1 and R.sub.2 independently represent a group selected from a hydrogen atom, a methyl group, a methoxy group, an ethoxy group, and an acetylamino group; R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 independently represent a group selected from a hydrogen atom, a hydroxyl group, a sulfonic acid group, a methoxy group, and an ethoxy group; X represents a hydrogen atom, an acetyl group, a benzoyl group, --SO.sub.2 C.sub.6 H.sub.5, --SO.sub.2 C.sub.6 H.sub.4 CH.sub.3, or ##STR2## where R.sub.9 and R.sub.10 independently represent a hydrogen atom, or --C.sub.2 H.sub.4 OH; and the sulfonic acid group is present as a salt of the same cation as that represented by M.
    Type: Grant
    Filed: February 5, 1992
    Date of Patent: June 1, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takao Yamamoto, Tsuyoshi Eida, Katsuhiro Shirota, Megumi Saito
  • Patent number: 5213589
    Abstract: An abrasive article is provided, the article including a substrate having an abrasive surface thereon including particles of an abrasive material secured by a binding medium wherein at least a portion of the abrasive surface has thereon a coating including a crosslinked siloxane. Methods of making and using such an articles are also presented.
    Type: Grant
    Filed: February 7, 1992
    Date of Patent: May 25, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Albert J. Ronning, Charles M. Leir
  • Patent number: 5211746
    Abstract: A composition comprising:(a) polyethylene having a density equal to or less than 0.925 gram per cubic centimeter, grafted with an unsaturated aliphatic diacid anhydride; and(b) magnesium hydroxide, surface treated with a saturated or unsaturated carboxylic acid or a metal salt thereof in an amount of about 0.1 to about 1 part by weight of acid or salt per 100 parts by weight of magnesium hydroxide.
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: May 18, 1993
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Michael J. Keogh, Jinder Jow
  • Patent number: 5210982
    Abstract: A composition for hardening animal or collagen based glue comprising a stabilized product of urea formaldehyde is provided and an article and method of manufacture thereof. Animal glue containing the hardening composition has reduced solubility in water, reduced swelling capacity, increased thermal and mechanical properties, and a reasonable pot-life, without disturbing the natural ability of the animal glue to biodegrade. The disclosed hardened animal glue may be used to adhere abrasive particles to flexible sheets of paper or cloth, commonly used in the manufacture of sandpaper or sandcloth, and eliminates the need for application of a sizing coat to said flexible sheets.
    Type: Grant
    Filed: January 22, 1991
    Date of Patent: May 18, 1993
    Inventors: Ronald S. Kormanek, Ilie V. Mandru
  • Patent number: 5212125
    Abstract: A process for producing a sintered AlN ceramic body by mixing an organic solution comprising a hydrocarbon solvent and an organometallic compound with AlN powder to produce a slurry, removing the solvent from the slurry to form a mixture of organometallic compound and AlN, forming the mixture into a shape, and heating the shape in a non-oxidizing atmosphere to sintering temperature to obtain densification.
    Type: Grant
    Filed: November 20, 1990
    Date of Patent: May 18, 1993
    Assignee: The Carborundum Company
    Inventors: David D. Marchant, Joseph R. Fox, Timothy W. Brauneck
  • Patent number: 5209993
    Abstract: Method of enveloping a battery plate in a heat-fusible fibrous separator material (e.g., fibrous glass mat) including the step of tacking the mat to itself by means of an electric arc.
    Type: Grant
    Filed: August 24, 1990
    Date of Patent: May 11, 1993
    Assignee: General Motors Corporation
    Inventor: Renard E. Mix
  • Patent number: 5205865
    Abstract: A method is provided for forming a tacky surface area on a styrenic resin, such as a polystyrene label. A thin film is applied of an alkyl, aryl or alkaryl ester of a phosphorus oxyacid providing a tacky area suitable for bonding to another surface. A composition particularly useful for bonding polystyrene labels to bottles is a solid alkyl, aryl or alkaryl ester of a phosphorus oxyacid and a cosolvent selected from terpenoids and aromatic compounds having a flash point of at least 35.degree. C. and a boiling point between 100.degree. C. and 260.degree. C.
    Type: Grant
    Filed: September 23, 1991
    Date of Patent: April 27, 1993
    Assignee: FMC Corporation
    Inventor: Douglas G. Placek
  • Patent number: 5206094
    Abstract: A fuel cell stack is cooled by evaporation of water into a carrier gas such as fuel or oxidant. The coolant and the carrier gas are separately supplied to the cooler, and this allows the fuel cell to operate at high pressure without raising cell temperature.
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: April 27, 1993
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Murray Katz
  • Patent number: 5203886
    Abstract: Vitrified bonded abrasive bodies prepared from sol-gel sintered aluminous grit particles, a vitreous bond, bubbled alumina, and a sacrificial organic material exhibit improved abrasive performance, especially for creepfeed grinding products.
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: April 20, 1993
    Assignee: Norton Company
    Inventors: David A. Sheldon, Carole J. Markhoff-Matheny, Renato Terragni