Patents Examined by Lorenzo B. Hayes
  • Foundry binder
    Patent number: 4464492
    Abstract: A binder composition for a foundry aggregate and a hardener therefor, as the binder, polyvinylammonium phosphate and, as the hardener, a linear alkali polyphosphate, ammonium polyphosphate, a source of polyvalent metal cations, orthophosphoric acid, or mixtures thereof.
    Type: Grant
    Filed: January 25, 1982
    Date of Patent: August 7, 1984
    Assignee: International Minerals & Chemical Corp.
    Inventor: John F. Kraemer
  • Corrosion inhibited copper nitrate solutions
    Patent number: 4462830
    Abstract: A non-corrosive aqueous solution of a copper nitrate which contains at least 30% by weight of copper nitrate, from 1-5% by weight of boric acid based on the weight of the copper nitrate, and from 0.2-3.0% by weight of EDTA based on the weight of the copper nitrate.
    Type: Grant
    Filed: August 4, 1983
    Date of Patent: July 31, 1984
    Assignee: Nalco Chemical Company
    Inventors: Daniel V. Diep, David A. Grattan
  • Ladle covering compound
    Patent number: 4462834
    Abstract: The exposed surface of a molten metal, ferrous or non-ferrous in a ladle is covered by an expanding insulating ladle covering compound that is capable of absorbing and removing non-metallic inclusions in a predictable volume. The compound includes burnt lime in amounts between 56% and 60% by weight, aluminum dross, including Al.sub.2 O.sub.3 in amounts between 22% and 30% by weight, fluorspar in amounts between 7% and 9% by weight, and acid treated graphite in amounts between 1% and 4% by weight.
    Type: Grant
    Filed: June 16, 1983
    Date of Patent: July 31, 1984
    Inventor: Micheal D. LaBate
  • Thick film silver metallization composition
    Patent number: 4462827
    Abstract: Paste composition for metal surface metallization containing 65 to 95% by weight silver and 5 to 35% by weight cadmium/antimony alloy dispersed in a liquid vehicle.
    Type: Grant
    Filed: November 19, 1982
    Date of Patent: July 31, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Joseph R. Rellick
  • Process for producing a dental restoration
    Patent number: 4461618
    Abstract: A process for producing a dental restoration wherein a bonding agent is disclosed for bonding dental porcelain to a nickel-containing metal core. The bonding agent is aluminum powder and an inert organic liquid carrier.
    Type: Grant
    Filed: November 10, 1982
    Date of Patent: July 24, 1984
    Assignee: Johnson & Johnson Dental Products Company
    Inventors: Robert D. DeLuca, Robin M. F. Jones
  • Method of producing corrosion inhibitors
    Patent number: 4459155
    Abstract: A method of producing a corrosion inhibitor formed of particles of an inorganic oxide having corrosion inhibiting anions chemically bound to the particles comprising contacting the inorganic oxide with an aqueous solution containing corrosion inhibiting anions at a temperature of from 50.degree. to 95.degree. C. and at a pH sufficiently low to initiate ion-exchange and maintaining the pH at this low level by the addition to the solution of further anions or a compound forming such anions in solution. Preferably the corrosion inhibiting anions are molybdate anions.The particles may be incorporated into protective coatings in amounts up to 80% wt based on dry film weight giving coatings with up to 12% wt of anions.
    Type: Grant
    Filed: December 11, 1981
    Date of Patent: July 10, 1984
    Assignee: The British Petroleum Company Limited
    Inventor: Richard A. Cayless
  • Paste for formation of transparent electroconductive coating film and process for preparation of said paste
    Patent number: 4456549
    Abstract: Disclosed is a paste for formation of a transparent electroconductive coating film, which comprises as a main component an organic indium complex having an oxygen atom coordinated directly to the indium atom, which is capable of forming an indium oxide film by sintering, such as trisacetylacetonatoindium (III).This paste provides a coating film having a low resistivity and a high transparency by screen printing and sintering, and has a good stability and a long pot life.If an organic tin compound such as tin octylate, dibutyl tin dilaurate or tetraacetylacetonatotin is incorporated as a resistivity-adjusting agent into this paste in an amount such that the Sn/(In+Sn) atomic ratio is 2 to 20%, especially good results are obtained. A cellulose derivative such as ethyl cellulose, nitrocellulose, acetyl cellulose or benzyl cellulose is advantageously incorporated as a viscosity builder into the paste.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: June 26, 1984
    Assignee: Alps Electric Co., Ltd.
    Inventors: Mitsuru Kano, Jun Nakanowatari, Yoshimi Kamijyo
  • Flame retardant copolyester-carbonate compositions
    Patent number: 4454275
    Abstract: An improved flame retardant polyester-carbonate composition comprised of an admixture of (i) an aromatic polyester-carbonate, (ii) an organic alkali metal salt of sulfonic acid or an organic alkaline earth metal salt of sulfonic acid or mixtures thereof, and (iii) a fluorinated polyolefin.
    Type: Grant
    Filed: August 11, 1982
    Date of Patent: June 12, 1984
    Assignee: General Electric Company
    Inventor: Niles R. Rosenquist
  • Process and apparatus for manufacturing flame retardant flexible foamed articles
    Patent number: 4451586
    Abstract: Process and apparatus are disclosed for manufacturing foamed articles such as tubes used as pipe insulation, which tubes are of a high impermeability and flexibility and are formed of a polymer, such as polyethylene or polypropylene, containing up to about 25% of an elastomer.
    Type: Grant
    Filed: June 30, 1982
    Date of Patent: May 29, 1984
    Assignee: Cosden Technology, Inc.
    Inventors: Alonzo H. Searl, Granville J. Hahn, Raleigh N. Rutledge
  • Process for preparing an artificial dental root
    Patent number: 4451235
    Abstract: An artificial dental root comprised of a particulate or powdered form of synthetic hydroxyapatite or calcined or sintered synthetic hydroxyapatite or a mixture thereof and an organic matrix, the surface area of said artificial dental root to be brought into contact with a bone being composed of both a phase of said hydroxyapatite and a phase of said organic matrix. The artificial dental root is prepared by blending said hydroxyapatite with said organic matrix and molding the blend. The artificial dental root has moderate affinity for a bone and high mechanical strength.
    Type: Grant
    Filed: April 4, 1983
    Date of Patent: May 29, 1984
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kensuke Okuda, Hirosi Nagai, Hiroto Fujimaki, Atsushi Tomonaga, Hideki Aoki
  • Endodontic filling and sealing composition
    Patent number: 4449938
    Abstract: A biologically compatible non-toxic composition which when mixed, is useful as an in situ curing endodonic filling material. The composition has two separately packaged components. One component is a paste which contains a low viscosity hydroxy terminated polydialkylsiloxane and a non-reactive silicone oil diluent having a viscosity of from about 20 to 20,000 centistrokes at 25.degree. C. and comprising a polydialkylsiloxane. The other component is a liquid which includes (i) the reaction product resulting from the refluxing at ambient pressure and a temperature of about 150.degree. to about 175.degree. C.
    Type: Grant
    Filed: February 19, 1982
    Date of Patent: May 22, 1984
    Assignee: Lee Pharmaceuticals, Inc.
    Inventor: Richard B. Pollak
  • Coagulated polyurethane coating compositions
    Patent number: 4448922
    Abstract: An aqueous coating composition is comprised of an aqueous anionic polyurethane dispersion and a salt of hydrofluorosilicic acid, wherein the pH of the composition is acidic and the composition is thixotropic. The composition is particularly useful for coating irregular substrates to form a regular surface thereon.
    Type: Grant
    Filed: July 14, 1982
    Date of Patent: May 15, 1984
    Assignee: Norwood Industries, Inc.
    Inventor: John R. McCartney
  • Method for forming sand cores and molds
    Patent number: 4448234
    Abstract: A hydrogen peroxide system or composition for use in resin polymerization comprises a mixture of a major part of concentrated (70%) hydrogen peroxide admixed with minor amounts of phosphoric acid, a halo-substituted acid, such as hydrochloric acid, fluoboric acid or hydrofluoric acid, and sodium perborate. The peroxide composition is characterized by its storage stability, resistance to detonation, zero flammability, ease of handling and improved catalytic properties in the polymerization of certain resins. This hydrogen peroxide composition is compatible for use with a variety of organic peroxides which have been used for resin condensation polymerization and may be used in conjunction therewith. This hydrogen peroxide composition may be safely mixed with resins and resin prepolymers on the sand prior to use.
    Type: Grant
    Filed: August 5, 1982
    Date of Patent: May 15, 1984
    Assignee: CL Industries, Inc.
    Inventors: Brian D. Kelley, Patrick H. Stewart
  • Coating for foundry cores and molds
    Patent number: 4443259
    Abstract: A coating for foundry cores and molds comprising an aqueous suspension of clay, olivine, and sodium tripolyphosphate.
    Type: Grant
    Filed: December 10, 1982
    Date of Patent: April 17, 1984
    Assignee: International Minerals & Chemical Corp.
    Inventor: Robert A. Nooden
  • Stabilizing mixture for a chemical copper plating bath
    Patent number: 4443257
    Abstract: An aqueous solution for electroless autocatalytic copper plating, containing a source of cupric ions, a source of hydroxylic ions, a reducing agent and a complexing agent in such a quantity as to render soluble the cupric ions in an alkaline medium, which further contains a stabilizing mixture formed by allylthiourea, at least a ferrocyanide of alkali metal or of ammonium ion, and at least an octylphenylether of ethylene polyoxide with 9-10 moles of ethylene oxide for each mole of octylphenol, the said three stabilizing compounds exerting a synergical action.This solution shows a very good stability and produces copper deposits having clear and brilliant appearance and good ductility properties.
    Type: Grant
    Filed: February 15, 1983
    Date of Patent: April 17, 1984
    Assignee: Alfachimici S.p.A.
    Inventors: Francesco Tomaiuolo, Mauro Bocchino
  • Aluminum flake dispersions
    Patent number: 4443256
    Abstract: Aluminum flake can be dispersed advantageously in a mixture of ethylene glycol and ethylene glycol monobutyl ether for use in solvent-based dispersions of poly(arylene sulfide) and optionally fluorocarbon.
    Type: Grant
    Filed: August 31, 1982
    Date of Patent: April 17, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Jozef T. Huybrechts
  • Varnish for protecting a tooth surface
    Patent number: 4443197
    Abstract: A varnish for the formation of a coating layer on a tooth surface to protect healthy tooth surface against the erosion by an acid etching solution during tooth restoration which comprises a polymer comprising vinyl chloride and vinyl acetate as the main monomer units dissolved in a dentally acceptable solvent.
    Type: Grant
    Filed: March 3, 1983
    Date of Patent: April 17, 1984
    Assignee: Kuraray Co., Ltd.
    Inventors: Takeo Fusayama, Junichi Yamauchi
  • Impact resistant polyphenylene ether resin compositions
    Patent number: 4442251
    Abstract: Compositions of polyphenylene ether resin, optionally containing an impact modifier are modified by incorporation of small amounts of a copolymer of ethylene and methyl acrylate. The resultant blends are moldable into articles having better Gardner (falling dart) impact strength than corresponding compositions similarly modified with low density polyethylene, without detriment to other important physical properties of the compositions.
    Type: Grant
    Filed: March 4, 1982
    Date of Patent: April 10, 1984
    Assignee: General Electric Company
    Inventors: William R. Haaf, Gim F. Lee, Jr., Sei P. Ting
  • Nonsludging complexes of chromium and stearic acid
    Patent number: 4440574
    Abstract: A storage stable Werner complex of stearato, CR.sup.+3, Cl and OH groups in the approximate molar ratio of 1:2:4:1 dissolved in from 15-30 weight percent pentanol and 47.7-32.7 weight percent isopropanol is disclosed. The solution contains from 5-7 weight percent chromium.
    Type: Grant
    Filed: February 22, 1983
    Date of Patent: April 3, 1984
    Assignee: E. I. Du Pont de Nemours & Company
    Inventor: Salvatore A. Bruno
  • Granular insulation product and process for its preparation
    Patent number: 4440575
    Abstract: The granular insulation product is intended more particularly for the insulation, protection or processing of metal baths during their manufacture or transport. The product comprises a solid phase having a certain mineral matter content and an organic binder comprising cellulose-based pulp, and preferably paper pulp. The granulation is carried out under conditions such that the granules being formed experience no appreciable compression likely to break the structure of the solid phase containing the mineral matter.
    Type: Grant
    Filed: October 19, 1982
    Date of Patent: April 3, 1984
    Inventors: Jean-Charles Daussan, Gerard Daussan, Andre Daussan