Patents Examined by Josephine Lloyd
  • Impregnated compound metal as contact material for vacuum switches and method for its manufacture
    Patent number: 4014659
    Abstract: An impregnated compound metal is provided comprising a metal matrix comprising a metallic main constituent having a melting point above 1400.degree. C and a metallic embrittlement additive impregnated with an impregnating metal or metal alloy, brittle intermetallic phases or mixed crystals forming between the main constituent and the embrittlement additive at sintering temperatures above 1200.degree. C. The percentage of embrittlement additive relative to the main constituent is 0.5 to 10 percent by weight. The melting points of all constituents are above 2000.degree. C.
    Type: Grant
    Filed: October 31, 1974
    Date of Patent: March 29, 1977
    Assignee: Siemens Aktiengesellschaft
    Inventors: Heinrich Hassler, Horst Kippenberg
  • Semiconductor ceramic composition
    Patent number: 4014822
    Abstract: A semiconductor ceramic composition consists essentially of 83.95 to 98.65 mol% of barium titanate, 0.13 to 0.45 mol% of manganese oxide, 0.20 to 15 mol% of silicon dioxide and 0.23 to 1.65 mol% of one or more oxides selected from the group consisting of oxides of rare earth elements, bismuth and antimony, the content of one or more oxides of said group being 0.10 to 1.20 mol% greater than that of manganese oxide. The semiconductor ceramic composition has a markedly high positive resistance temperature characteristic.
    Type: Grant
    Filed: April 26, 1974
    Date of Patent: March 29, 1977
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Nagao Fujikawa
  • Composite superconducting materials
    Patent number: 4013591
    Abstract: Composite materials having properties of superconductivity which remain at much higher temperatures than conventional superconductors and intended for such applications as the construction of magnetometers or thermometers are provided in a divided form and in a monocrystalline matrix consisting of semiconducting material with zones of superconductivity formed by microprecipitates of one of the constituents of the semiconducting material.
    Type: Grant
    Filed: March 11, 1974
    Date of Patent: March 22, 1977
    Assignee: Brevatome
    Inventors: Rene Granger, Alain Labsley, Serge Rolland
  • Acid soluble packer and workover fluid
    Patent number: 4012328
    Abstract: A well completion and packer fluid additive consisting essentially of carboxymethyl cellulose crosslinked with an inorganic chromium compound. The fluids prepared with this procedure have temperature stability to 250.degree. F., excellent resistance to contamination, stability in electrolyte solutions such as KCl and CaCl.sub.2 and upon acidizing the fluid retains less the 3% residue.
    Type: Grant
    Filed: March 3, 1975
    Date of Patent: March 15, 1977
    Assignee: Dresser Industries, Inc.
    Inventors: Melvel P. Hunter, Karl E. Gillenwater, Henry J. Warren
  • Solutions of new complex antimony compounds
    Patent number: 4010104
    Abstract: The invention relates to solutions of complex antimony compounds substantially insoluble in water which are produced by reacting antimony oxides with .alpha.-hydroxy carboxylic acids and further reaction with monoisocyanates as well as a process for the production of these solutions.The solutions according to the invention may be added to solutions of acrylonitrile polymers and copolymers and they improve the non-inflammability of shaped articles produced thereof.
    Type: Grant
    Filed: May 8, 1975
    Date of Patent: March 1, 1977
    Assignee: Bayer Aktiengesellschaft
    Inventors: Eduard Radlmann, Heinz Schaffner, Gunter Lorenz, Gunther Nischk
  • Hand powered tufting machine
    Patent number: D243294
    Type: Grant
    Filed: June 25, 1975
    Date of Patent: February 8, 1977
    Assignee: Rumplestiltskin's Craft Shop, Inc.
    Inventors: Fred A. Thaheld, Fred H. Thaheld
  • Placemat or similar article
    Patent number: D243305
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: February 8, 1977
    Inventor: Gary K. Kobashikawa
  • Deep textured decorative laminate
    Patent number: D243369
    Type: Grant
    Filed: March 27, 1975
    Date of Patent: February 8, 1977
    Assignee: Formica Corporation
    Inventor: Jack August Willard
  • Curtain material
    Patent number: D243471
    Type: Grant
    Filed: August 25, 1975
    Date of Patent: February 22, 1977
    Inventor: Peter E. Schroeder
  • Coffeemaker
    Patent number: D243501
    Type: Grant
    Filed: June 6, 1975
    Date of Patent: March 1, 1977
    Assignee: Dart Industries Inc.
    Inventor: David L. Painter
  • Sewing machine
    Patent number: D243686
    Type: Grant
    Filed: June 19, 1975
    Date of Patent: March 15, 1977
    Inventor: Kazuo Ito
  • Coffeemaker
    Patent number: D243737
    Type: Grant
    Filed: August 15, 1975
    Date of Patent: March 22, 1977
    Assignee: Dart Industries Inc.
    Inventor: David L. Painter
  • Meat lifting tongs
    Patent number: D243739
    Type: Grant
    Filed: September 4, 1975
    Date of Patent: March 22, 1977
    Inventor: James P. Mazza
  • Curtain material
    Patent number: D243788
    Type: Grant
    Filed: August 25, 1975
    Date of Patent: March 22, 1977
    Inventor: Peter E. Schroeder
  • Curtain material
    Patent number: D243789
    Type: Grant
    Filed: August 25, 1975
    Date of Patent: March 22, 1977
    Inventor: Peter E. Schroeder
  • Curtain material No. 588
    Patent number: D243790
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: March 22, 1977
    Inventor: Peter E. Schroeder
  • Yarn holder
    Patent number: D243802
    Type: Grant
    Filed: September 8, 1975
    Date of Patent: March 29, 1977
    Inventor: Sylvia L. Samet
  • Sewing machine
    Patent number: D243841
    Type: Grant
    Filed: August 25, 1975
    Date of Patent: March 29, 1977
    Assignee: Tokyo Juki Kogyo Kabushiki Kaisha
    Inventor: Tibor Arvai
  • Curtain material
    Patent number: D243872
    Type: Grant
    Filed: August 25, 1975
    Date of Patent: March 29, 1977
    Inventor: Peter E. Schroeder
  • Curtain material
    Patent number: D243873
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: March 29, 1977
    Inventor: Peter E. Schroeder