Patents Examined by C. Lovell
  • Patent number: 4094671
    Abstract: A copper alloy having a gold color and being particularly suitable for restorative dentistry and consisting essentially of copper, zinc and a small amount of zirconium. Other additions may be included in the alloy.
    Type: Grant
    Filed: July 12, 1976
    Date of Patent: June 13, 1978
    Inventor: Osamu Hayashi
  • Patent number: 4078921
    Abstract: An improved alloy for a dental amalgam includes silver and tin and the additional element, manganese. The alloy is comprised of a minimum of about 60% by weight silver, a maximum of about 20% by weight manganese and the balance tin. Various amounts of other constituents known to those in the art such as gold, copper, zinc and mercury may be included.
    Type: Grant
    Filed: August 12, 1976
    Date of Patent: March 14, 1978
    Assignee: American Dental Association Health Foundation
    Inventor: Richard M. Waterstrat
  • Patent number: 4076524
    Abstract: Swelling of structural components of fast reactors is reduced by producing those components from an alloy consisting of iron and 0.3 at % V or P.
    Type: Grant
    Filed: November 15, 1973
    Date of Patent: February 28, 1978
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Fred A. Smidt, Jr., James A. Sprague
  • Patent number: 4071358
    Abstract: A heat resisting copper base brazing filler metal consisting essentially of by weight percent, 10 to 20 manganese, 2 to 10 nickel, 0.5 to 4.0 tin, 0.5 to 4.0 indium and balance copper. The brazing filler metal provides sound, tight joints with excellent strength retention at elevated temperatures.
    Type: Grant
    Filed: February 16, 1977
    Date of Patent: January 31, 1978
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventor: Ichiro Kawakatsu
  • Patent number: 4071359
    Abstract: Copper base alloys having improved rupture properties and improved hot rolling performance consisting of from 2 to 9.5% aluminum, preferably also from 0.001 to 3.0% silicon, a grain refining element, preferably cobalt in an amount from 0.001 to 5.0%, from 0.001 to 0.5% of a material selected from the group consisting of a material of the lanthanide series of the Periodic Table and mixtures thereof, and the balance essentially copper.
    Type: Grant
    Filed: March 31, 1976
    Date of Patent: January 31, 1978
    Assignee: Olin Corporation
    Inventors: Harvey P. Cheskis, Stanley Shapiro, Jacob Crane
  • Patent number: 4069370
    Abstract: The material is applied to a substrate, for example, terminal bronze, brass, or the like, and comprises, preferably, 50 to 55% gold, 24 to 28% palladium, 15 to 20% silver, 2.5 to 3% tin, 0.08 to 0.15% iridium, 0.08 to 0.15% ruthenium, 0.1 to 0.3% copper and 0.6 to 1% indium.
    Type: Grant
    Filed: July 16, 1976
    Date of Patent: January 17, 1978
    Assignee: W. C. Heraeus GmbH
    Inventors: Nils Harmsen, Franz Sperner
  • Patent number: 4067734
    Abstract: Disclosed are alloys of titanium possessing improved combinations of strength, toughness and stress corrosion resistance. These titanium alloys contain from 3.8 to 5.3% Al, up to 4.0% Zr, 2.5 to 4.25% Mo, 2.5 to 4.25% V, up to 1.25% Fe, up to 2.2% Cr and up to 1.0% Ni.
    Type: Grant
    Filed: October 18, 1974
    Date of Patent: January 10, 1978
    Assignee: The Boeing Company
    Inventors: Roland E. Curtis, Peter T. Finden
  • Patent number: 4067756
    Abstract: A high strength, high ductility low carbon steel consisting essentially of iron, 0.05-0.15 wt% carbon, and 1-3 wt% silicon. Minor amounts of other constituents may be present. The steel is characterized by a duplex ferrite-martensite microstructure in a fibrous morphology. The microstructure is developed by heat treatment consisting of initial austenitizing treatment followed by annealing in the (.alpha. + .gamma.) range with intermediate quenching.
    Type: Grant
    Filed: November 2, 1976
    Date of Patent: January 10, 1978
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Jayoung Koo, Gareth Thomas
  • Patent number: 4067750
    Abstract: A process of heat treating and mechanically working copper base alloys containing chromium, zirconium and vanadium is disclosed. The combination of alloying ingredients, hot and cold rolling, annealing and aging steps increases both the strength and electrical conductivity properties of the alloy without excessive cold working or aging.
    Type: Grant
    Filed: January 28, 1976
    Date of Patent: January 10, 1978
    Assignee: Olin Corporation
    Inventors: Brian Mravic, Stanley Shapiro, W. Gary Watson, Eugene Shapiro
  • Patent number: 4065326
    Abstract: The invention relates to the field of electrical conductors of aluminum-based alloys. The invention comprises subjecting a wire rod of Al-Mg-Si alloy to continuous quenching, tepid drawing and continuous artificial aging. The invention makes it possible to produce wires and cables for overhead lines with mechanical and electrical characteristics substantially exceeding present standards.
    Type: Grant
    Filed: May 28, 1976
    Date of Patent: December 27, 1977
    Assignee: Societe de Vente de l'Aluminium Pechiney
    Inventor: Jean-Claude Nicoud
  • Patent number: 4062705
    Abstract: A method for obtaining a weld metal having excellent toughness at low temperatures as below C, which method comprises heating the weld metal having a specific steel composition to its austenitizing temperature and cooling it or holding it at the temperature for not longer than 25 minutes and then quenching and tempering it. In order to further improve the low temperature toughness, the weld metal is reheated again to the Ac.sub.1 to Ac.sub.3 range. Excellent low temperature toughness of the weld metal can be obtained without the necessity of using any special welding materials.
    Type: Grant
    Filed: July 29, 1974
    Date of Patent: December 13, 1977
    Assignee: Nippon Steel Corporation
    Inventors: Hisashi Gondo, Hajime Nakasugi, Turugi Kimura, Masanobu Yamaguti
  • Patent number: 4062676
    Abstract: Gold alloys for firing on porcelain for dental purposes are prepared from 60 to 90 weight % gold, 5 to 35 weight % platinum, 0.1 to 3 weight % indium, 0 to 10 weight % palladium, 0.5 to 3 weight % rhodium, 0 to 3 weight % tin, 0.1 to 2 weight % tantalum and/or tungsten and 0.3 to 2 weight % zinc, the weight ratio of the platinum group metals to zinc to tantalum and/or tungsten are 15-30:1:0.5-1.3.
    Type: Grant
    Filed: July 6, 1976
    Date of Patent: December 13, 1977
    Assignee: Deutsche Gold- und Silber-Scheideanstalt Vormals Roessler
    Inventor: Helmut Knosp
  • Patent number: 4063211
    Abstract: A method for manufacturing a highly stable metal thin film resistor including a substrate having deposited thereon a sputtered tantalum-silicon alloy film containing from 50-72 atomic percent of silicon, comprising heating the as-sputtered amorphous film to a temperature of between C and C for a time period of from 1 to 60 minutes in an ambient atmosphere of air or oxidizing gas or in an ambient atmosphere of inert gas or a vacuum. The as-sputtered film becomes completely crystallized, and a tantulum-silicon alloy thin film resistor which is high in stability, high in specific resistance and has a low temperature coefficient of resistance is obtained.
    Type: Grant
    Filed: October 1, 1975
    Date of Patent: December 13, 1977
    Assignees: Taisei Denski Kabushiki Kaisha, Nobuo Yasujima
    Inventors: Nobuo Yasujima, Natsuo Itokawa, Juichiro Arai
  • Patent number: 4058419
    Abstract: A P type semiconductor layer is formed on an N type semiconductor layer by vapour epitaxial growth technique, an insulating film is formed on the P type semiconductor layer and a grid shape first opening is provided through the insulating film. Then, phosphorus is diffused into the P type semiconductor layer through the grid shape opening to form a first N type region extending through the semiconductor layer to reach the N type semiconductor layer. Then, second openings are formed through respective sections of the insulating film divided by and surrounded by the grid shape first opening and boron is diffused through the first and second openings to form first and second P type regions in the grid shape first N type region and the P type semiconductor layer, respectively.
    Type: Grant
    Filed: December 24, 1975
    Date of Patent: November 15, 1977
    Assignee: Tokyo Shibaura Electric, Co., Ltd.
    Inventors: Yukuya Tokumaru, Masanori Nakai, Satoshi Shinozaki, Junichi Nakamura, Shintaro Ito, Yoshio Nishi
  • Patent number: 4040876
    Abstract: An alloy consisting essentially of from about 14% to 19% chromium, from 25 to 35% of nickel, from about 2% to 3% molybdenum, from about 0.1% to 1% of silicon, up to 0.5% of manganese, from about 0.03 to 0.05% carbon, up to about 0.01% sulfur, up to about 0.01% of phosphorus, up to 0.01% boron, up to about 0.01% oxygen, up to about 0.02% nitrogen, small amounts of incidental impurities, and the balance being iron, the alloy having an N.sub.v (average electron vacancy number) value of between 1.6 and 2.8, has an unexpected combination of properties enabling it to be formed by hot and cold working and heat treatment into components and members particularly suitable for use in nuclear reactors wherein the components are subjected to molten sodium, where the corrosion of the surface of the alloy is not in excess of the order of 1 to 2 mils per year, and the alloy exhibits low swelling when exposed to intense radiation, while exhibiting good physical properties at temperatures of up to F.
    Type: Grant
    Filed: July 2, 1974
    Date of Patent: August 9, 1977
    Assignee: Westinghouse Electric Corporation
    Inventors: Melvin L. Bleiberg, Sidney Diamond, Arthur F. Rowcliffe, John A. Spitznagel
  • Patent number: 4032368
    Abstract: Hypoeutectoid steel is heated to an intercritical temperature to produce a microstructure of about 30-50% austenite. The steel is then cooled as rapidly as feasible to a temperature below A.sub.s and held at temperature to transform the austenitic portion. Such transformation may occur either in the minimum of the pearlite region ( F) or in the bainite region ( F).
    Type: Grant
    Filed: February 13, 1975
    Date of Patent: June 28, 1977
    Assignee: United States Steel Corporation
    Inventor: Raymond A. Grange
  • Patent number: 4018942
    Abstract: The invention concerns a method for the manufacture of a superconductor with a layer of the A-15 phase of the system Nb--Al or Nb--Al--Ge. According to the invention, a niobium carrier is provided with a 0.5 to 5 .mu.m thick layer consisting of NbAl.sub.3 and Al or of Nb(Al,Ge).sub.3, respectively, by being placed in an aluminum melt which is saturated with niobium or niobium and germanium, respectively, and is heated to to C, and the niobium carrier provided with this layer is then annealed in an inert atmosphere for 0.5 to 5 seconds at a temperature of to C.
    Type: Grant
    Filed: October 31, 1974
    Date of Patent: April 19, 1977
    Assignee: Siemens Aktiengesellschaft
    Inventors: Alfred Muller, Arno Fink
  • Patent number: 4015949
    Abstract: This invention consists of a plain bearing in which the bearing surface consists of or includes poly-phenylene sulphide to give good bearing properties and also because such linings can be bonded of backings to steel or aluminum or aluminum alloys with a bond that withstands hard operating conditions, for example changes of temperature and changes of shape and stress. The linear polymer can be cross-linked to a desired extent by appropriate treatment.
    Type: Grant
    Filed: October 8, 1975
    Date of Patent: April 5, 1977
    Assignee: The Glacier Metal Company Limited
    Inventors: Dennis Stanley Baker, Glyndwr John Davies
  • Patent number: 4014692
    Abstract: Platinum-rhodium alloys containing small amounts of boron and zirconium have low creep rates and high resistance to glass corrosion making the alloys particularly suitable for glass-fiberizing bushings.
    Type: Grant
    Filed: January 9, 1976
    Date of Patent: March 29, 1977
    Assignee: Owens-Corning Fiberglas Corporation
    Inventor: Darryl J. Costin
  • Patent number: RE29240
    Abstract: Hypoeutectoid steels are worked within a temperature range of between the A.sub.1 temperature to F. below the A.sub.1 temperature. The cross-sectional area of the steels is reduced by not less than 60% during working. After working, the steels can be heated to about the A.sub.1 temperature to obtain the optimum hardness and ductility for cold-working.The as-worked structure and the heat treated structure are also described.
    Type: Grant
    Filed: November 28, 1975
    Date of Patent: May 31, 1977
    Assignee: Bethlehem Steel Corporation
    Inventor: Helmut Kranenberg