Patents Examined by S. L. Childs
  • Patent number: 4528215
    Abstract: In the pack diffusion coating of chromium into the surface of a superalloy, the formation of undesirable oxide inclusion is reduced when the diffusion coating pack contains at least about 3% Ni.sub.3 Al. Also the formation of alpha-chromium is reduced when the pack diffusion is carried out in a retort effectively not over five inches in height. On the other hand an alpha-chromium-rich layer at least 0.2 mil thick can be deliberately formed and the superalloy thus coated subjected to an aluminizing treatment to convert the alpha-chromium into islands that provide very high sulfidation resistance. Pack aluminizing in the presence of chromium makes a very effective aluminum- or chromium-containing top coating over platinum plated or platinum coated nickel-base superalloys. Depletion of diffusible material from workpieces heated in a powder-pack can also provide a surface on which aluminizing produces a highly impact-resistant coating.
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: July 9, 1985
    Assignee: Alloy Surfaces Company, Inc.
    Inventors: Alfonso L. Baldi, Victor V. Damiano
  • Patent number: 4525427
    Abstract: Polyester compositions containing dicyclopentadiene, maleic acid and a compound containing at least one alcoholic hydroxy group, the polyester formed by a two-stage process. In the first stage, maleic acid and dicyclopentadiene are heated to form an intermediate reaction product. In the second stage, the intermediate is heated with a compound containing at least one alcoholic hydroxy group to form the polyester. The compositions containing this polyester and a diluent have good adhesion to metal and plastic substrates, and are useful as automobile body putty primers. These polyester compositions exhibit good adhesion in corrosion-inducing environments, and are useful to protect against further corrosion.
    Type: Grant
    Filed: October 12, 1984
    Date of Patent: June 25, 1985
    Assignee: The Alpha Corporation
    Inventors: Charles E. Bayha, Daniel H. McQueen
  • Patent number: 4525227
    Abstract: A process for the manufacture of triple- and multi-layer particle board employing phenol formaldehyde resin compositions for gluing particles in the outer layers of the board characterized by the use of a phenol formaldehyde resin composition having a viscosity of about 30-90 seconds (4-mm DIN cup), a solids content of between about 30 and 39 percent by weight and an alkali content of less than 8 percent by weight is provided.
    Type: Grant
    Filed: December 5, 1983
    Date of Patent: June 25, 1985
    Assignee: Deutsche Texaco Aktiengesellschaft
    Inventors: Gerd Ripkens, Hans Schittek, Adolf Buschfeld
  • Patent number: 4524106
    Abstract: Coatings are provided that are especially useful for decorative purposes. The coatings are black, amorphous carbon and may be formed by dc magnetron sputtering on a substrate utilizing a target of high density graphite.
    Type: Grant
    Filed: June 23, 1983
    Date of Patent: June 18, 1985
    Assignee: Energy Conversion Devices, Inc.
    Inventor: James D. Flasck
  • Patent number: 4522849
    Abstract: A method for coating quartz with a protective boron nitride film constitutes heating the quartz member to a temperature of 900.degree. C. to 1000.degree. C. in a stream of inert gas. After heating the quartz member to the desired temperature, the flow of inert gas is discontinued, whereupon ammonia and diborane gases, mixed at a temperature of 200.degree. C. to 400.degree. C., are allowed to flow past the quartz member. The flow of mixed ammonia and diborane gases is maintained for a time sufficient to deposit a boron nitride film of desired thickness. The boron nitride is produced by chemical reaction between ammonia and diborane.
    Type: Grant
    Filed: October 18, 1983
    Date of Patent: June 11, 1985
    Assignee: General Electric Company
    Inventor: Robert S. Lewandowski
  • Patent number: 4521458
    Abstract: This invention relates to a process for coating a substratum sheet material, such as woven fabrics, by first removing from the substratum material any moisture that does normally exist therein, and then coating the substratum material with a coating composition with no moisture, air or other impurities being trapped between the substratum and the coating. Novel products produced by this process comprise new compositions of sheet materials having improved weathering characteristics including stability against ultraviolet degradation for improved service in highly transparent or translucent coverings for roofs and solar devices.
    Type: Grant
    Filed: April 1, 1983
    Date of Patent: June 4, 1985
    Inventor: Richard C. Nelson
  • Patent number: 4521495
    Abstract: A process for treating wood substrate, including textured hardboard having surface irregularities consisting of high ridge areas protruding above the surface, with a low viscosity aqueous coating to produce a coated article having substantially uniform film thickness. A substantially uniform film can be obtained by preheating the substrate (about 250.degree. to 400.degree. F.), flooding the surface with the aqueous coating, partially dewatering and affixing the coating to the surface by coalescence and removing the excess coating. It is necessary to critically control the substrate temperature and time in which the coating remains in contact with the heated substrate before the excess coating is removed using an air knife.
    Type: Grant
    Filed: June 25, 1984
    Date of Patent: June 4, 1985
    Assignee: SCM Corporation
    Inventor: Kenneth G. Hahn, Jr.
  • Patent number: 4521452
    Abstract: Preparation of polymeric gels, filaments, and films prepared by producing a uniform dispersion of a water soluble acrylamide polymer or copolymer in the water insoluble reaction product of certain water soluble aldehydes and water soluble primary amines. The reaction is carried out in aqueous solution. Gel formation time may range from a few seconds to several minutes depending on selection of appropriate parameters. The gels have many desirable properties such as preparation from relatively nontoxic components, superior adhesion, toughness, and water impermeability. The gels have many uses such as adhesives, sealing cracks and joints in pipes, stabilizing earthen formations, waterproofing subgrade construction and as intermediates in the preparation of films, filaments, and membranes. Gels for these purposes may be treated with carbon dioxide to provide a color change and additional surface hardness.
    Type: Grant
    Filed: February 26, 1981
    Date of Patent: June 4, 1985
    Inventor: Ronald E. Highsmith
  • Patent number: 4510180
    Abstract: Coating of geological formations as well as air- and fire barriers is performed by providing aqueous rubber or rubber-like dispersions and spraying the dispersions via separate conduits simultaneously with a dry hydraulic binding medium, by a pressure air onto an object to be coated. An inert filling material can be added to the hydraulic binding medium, and a tenside can be added to the dispersions.
    Type: Grant
    Filed: February 14, 1983
    Date of Patent: April 9, 1985
    Assignee: Bergwerksverband GmbH
    Inventors: Wolfgang Cornely, Heinz Esser, Rudolf Schmidt
  • Patent number: 4508750
    Abstract: As in the case of the irradiation of plane materials, the production of an inert atmosphere for the radiation-curable coating plays a decisive role with regard to the operating costs and the quality of the resulting product in the case of the curing of shaped parts. The present invention shows that the production of an inert atmosphere with the aid of a vacuum/inert gas lock with subsequent feeding through the lock into a radiation chamber constitutes an inexpensive means of producing an inert atmosphere for shaped parts, since flushing of the radiation chamber 8 to 10 times before each irradiation operation, as was necessary in the past, is dispensed with.
    Type: Grant
    Filed: February 27, 1981
    Date of Patent: April 2, 1985
    Assignee: 501 Polymer-Physik GmbH & Co.
    Inventors: Eberhard Foll, Peter Holl, Helmut Vetter
  • Patent number: 4508784
    Abstract: The invention relates to novel 4-styryl-4'-vinylbiphenyls of the formula ##STR1## wherein the benzene rings A, B and C can carry non-chromophoric substituents and R.sub.3 is a second order non-chromophoric substituent, and R.sub.4 is hydrogen or a non-chromophoric substituent which cannot be a second order substituent, and also a process for obtaining them. These novel compounds can be used as fluorescent whitening agents for treating organic material of high molecular weight, preferably textile material, most preferably polyester fibres. The invention also discloses novel intermediates of the formula ##STR2## wherein A, B and C are as defined above, which are formed during the production of the novel 4-styryl-4'-vinylbiphenyls, and also a process for obtaining them.
    Type: Grant
    Filed: January 23, 1984
    Date of Patent: April 2, 1985
    Assignee: Ciba Geigy Corporation
    Inventor: Leonardo Guglielmetti
  • Patent number: 4505985
    Abstract: Membranes based on silicic acid heteropolycondensates are produced by hydrolytic polycondensation of at least one silicic acid derivative in the presence of water and, if appropriate, a condensation catalyst, the polycondensation being carried out at the surface of a support, which supports the resulting membrane. The reactants can be fed to the surface of the support via the gas phase or via one or more liquid phases.
    Type: Grant
    Filed: May 3, 1983
    Date of Patent: March 19, 1985
    Assignee: Fraunhofer-Gesellschaft
    Inventors: Helmut Schmidt, Alfred Kaiser, Horst Scholze
  • Patent number: 4505946
    Abstract: A method for coating metal with a dissimilar metal which comprises heating a parent metal at a temperature at which substitution of a halide metal for said parent metal occurs or a higher temperature while directly contacting the powdered halide metal with the surface of said parent metal to effect the substitution reaction of said halide metal, then cooling the resulting product, and removing the residue from said product.
    Type: Grant
    Filed: November 30, 1981
    Date of Patent: March 19, 1985
    Assignee: Aichi Steel Works, Limited
    Inventors: Michihiko Suzuki, Katsukiyo Kawaguchi, Yoshihiko Kojima
  • Patent number: 4504524
    Abstract: A process for remotely fixing toxic dust, such as plutonium oxide, on the surfaces of a sealed cavity defining an airlock between two enclosures containing toxic material which are sealingly coupled to each other, so as to avoid contamination of the atmosphere upon uncoupling of the enclosures. The cavity is filled through an inlet zone with a solution of silicone grease in a solvent, such as freon, which is capable of wetting the surfaces of the cavity. The solvent is vaporized and evacuated from the cavity such that the silicone grease is deposited on the surfaces of the cavity to fix the toxic dust thereto.
    Type: Grant
    Filed: December 7, 1982
    Date of Patent: March 12, 1985
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Pierre R. Auchapt, Aime J. Ferlay
  • Patent number: 4504546
    Abstract: Combustible materials such as fiber is made flame retardant by treating the material with a methanol or water solution containing the newly discovered compound ammoniumtriborate (NH.sub.4.B.sub.3 O.sub.5.3CH.sub.3 --OH) or a methanolic solution of newly discovered methylborate ammonia adduct. These new flame retardants have the ability to penetrate the combustible material when applied as a solution and thereafter be converted in situ to ammoniumpentaborate to result in enhanced flame retardation over that achieved by merely the direct treatment with ammoniumpentaborate with other borate flame retardants.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: March 12, 1985
    Inventor: Stephen I. Sallay
  • Patent number: 4504525
    Abstract: A method comprising positioning, in a narrow vertical elongated space, an apparatus comprising a vertical guide track supporting a vertically displaceable carriage, said carriage having means to apply a coating to one of the said walls; securing the guide track against movement in the narrow vertical elongated space; moving the carriage vertically on the guide track while applying a coating from the carriage to one of the said walls as a vertical band; moving the guide track adjacent an area of the same wall which has not been so coated and again securing the guide track; moving the carriage vertically on the guide track while applying a coating from the carriage to the same wall as a vertical band; and repeating the described application of coating bands until a substantial portion of the wall is coated.
    Type: Grant
    Filed: September 12, 1983
    Date of Patent: March 12, 1985
    Assignee: Chicago Bridge & Iron Company
    Inventor: Francis V. Bellafiore
  • Patent number: 4504549
    Abstract: An elastomeric silicone finish is prepared from a silicone system comprising a blend of silanols and crosslinable silicone intermediates. The blend is applied to the desired substrate and thereafter catalyzed and cured to obtain an elastomeric finish.
    Type: Grant
    Filed: May 20, 1983
    Date of Patent: March 12, 1985
    Assignee: Union Carbide Corporation
    Inventors: Arthur N. Pines, Angelo J. Sabia
  • Patent number: 4500567
    Abstract: A method for forming a fluorine-containing tin oxide coating on the surface of a substrate which comprises contacting the heated surface of the substrate with a vapor of monobutyltin trichloride or a mixed vapor of monobutyltin trichloride and a doping agent composed of a fluorine-containing compound of the following formulaXCHF.sub.2wherein X represents a fluorine atom, a chlorine atom, or a hydrocarbon group consisting only of carbon and hydrogen atoms,to oxidize and decompose the vapor or the mixed vapor thermally and deposit tin oxide or fluorine-containing tin oxide respectively thereon.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: February 19, 1985
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Yukihiro Kato, Hideo Kawahara, Masato Hyohdou
  • Patent number: 4495889
    Abstract: Method and apparatus are disclosed for coating substrates with a film polymer based on p-xylylene by vapor-shaped polymerization. The apparatus monitors the monomer vapor pressure after pyrolization of the cyclic di-p-xylylene dimer, compares the measured pressure to a predetermined pressure needed to effect a completed vapor-phase polymerization reaction, and adjusts the temperature of vaporization in response to variations between measured pressure and the predetermined pressure.
    Type: Grant
    Filed: November 24, 1982
    Date of Patent: January 29, 1985
    Inventor: Thomas J. Riley
  • Patent number: 4496609
    Abstract: Process and apparatus for heating substrates to form semiconductor regions. A gaseous reactant is introduced into a reaction chamber formed from a material, such as quartz, which is transparent and non-obstructive to radiant heat energy transmitted at a predetermined short wave length. A graphite susceptor, which is opaque to and absorbs the radiant heat energy, is positioned within the reaction chamber and supports the substrates to be processed. The susceptor and substrates are heated directly while the walls of the reaction chamber remain cool. The substrates are heated uniformly, and single crystal semiconductor wafers processed by this technique have little or no crystallographic slip. To further insure uniform heating, the susceptor may be moved relative to the radiant heat source which, in the preferred embodiment, comprises a bank of tungsten filament quartz-iodine high intensity lamps.
    Type: Grant
    Filed: October 22, 1981
    Date of Patent: January 29, 1985
    Assignee: Applied Materials, Inc.
    Inventors: Michael A. McNeilly, Walter C. Benzing