Patents Examined by Michael L. Lewis
  • Method of making briquettes and product
    Patent number: 4369062
    Abstract: The method of making briquettes having approximately 50% metallic fines, 41% mill scale, 2% bentonite, 3% pitch residue, 2% burnt lime fines, and 2% molasses; and briquettes having that composition.
    Type: Grant
    Filed: September 28, 1981
    Date of Patent: January 18, 1983
    Inventor: Robert R. Strange
  • Fired iron-ore pellets having at least two different precipitated slag phases and process for producing the same
    Patent number: 4367091
    Abstract: Fired iron-ore pellets are prepared which have at least two precipitated slag phases of different chemical compositions which appear among the iron-oxide grains of the pellets. The pellets each contain not less than 4% by weight of CaO+SiO.sub.2 so that the resulting pellets have the characteristic of forming large cracks which are formed in the course of reduction of the pellets. The cracks which form cause each pellet to split into several pieces. The fired iron-ore pellets exhibit excellent reducibility.
    Type: Grant
    Filed: August 29, 1978
    Date of Patent: January 4, 1983
    Assignee: Kobe Steel, Ltd.
    Inventors: Isao Fujita, Mamoru Onoda, Takeshi Sugiyama, Shoji Shirouchi
  • Corrosion resistant thermostat metal compositions
    Patent number: 4366210
    Abstract: Thermostat metals combining properties of relatively high flexivity and good corrosion resistance are prepared by metalurgically bonding a corrosion resistant high expansive alloy (1) to a less corrosion resistant low expansive alloy (2) and capping the low expansive alloy (2) with a corrosion resistant, moderately low expansive alloy (3) of similar hardness to that of the low expansive alloy (2).The preferred high expansive alloy (1) is comprised of about 18 wt. % Ni; 11 wt. % Cr; and balance Fe.The preferred low expansive alloy (2) is Invar (36 wt. % Ni; balance Fe).The preferred corrosion resistant low expansive alloy (3) is comprised of about 20 wt. % Ni; 26 wt. % Co; 7 wt. % Cr; balance Fe.The preferred volumetric ratios of the metals is about 50% of the high expansive alloy (1), 30 to 40% of the low expansive metal (2) and 10 to 20% of the corrosion resistant low expansive alloy.
    Type: Grant
    Filed: November 14, 1980
    Date of Patent: December 28, 1982
    Assignee: Hood and Co., Inc.
    Inventors: Stanley M. Golemo, Jr., Anthony J. Izbicki
  • Method for manufacturing workpieces having adaptation faces capable of withstanding extremely high surface pressures and temperatures, and product produced thereby
    Patent number: 4363854
    Abstract: Manufacturing method and high-stress resistant product produced thereby. The method involves electro deposition by cathodic electrolysis of a thin metallic layer of the oxide of the metal molybdenum, on the surface of a metal workpiece. The workpiece, which could be solid or else a laminate such as a slide bearing, thus has an adaptation surface capable of withstanding extremely high surface pressures and/or high temperatures, and of preventing metallic-surface abrasion or galling, and dry friction.
    Type: Grant
    Filed: June 16, 1980
    Date of Patent: December 14, 1982
    Assignee: Glyco-Metall-Werke Daelen & Loos GmbH
    Inventors: Erich Hodes, Michael Steeg, Peter Lippok
  • Process of upgrading nickeliferous oxide ores of lateritic origin
    Patent number: 4362558
    Abstract: A process of upgrading garnieritic ores, oxidized nickelifer ores of lateritic origin which includes subjecting the ore to controlled attrition and classifying particles so formed according to their size, those having a dimension smaller than a predetermined value being recovered.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: December 7, 1982
    Assignee: Societe Metallurgique le Nickel-SLN
    Inventors: Andre Desnoes, Jean-Jacques Predali, Guy Ranchin
  • Froth flotation of ores
    Patent number: 4362552
    Abstract: Beneficiation of metallic ores selected from the group of zinc, bismuth, cobalt, nickel, titanium, zirconium, thorium, chromium, molybdenum, wolfram, and uranium, by froth flotation process using commercial amines in conjunction with oxalic acid or alkali oxalates to obtain pure concentrates of said metal values comprises; adding to a water suspension of finely divided ore of amine type collectors and an adequate amount of oxalic acid or a soluble oxalate which acting in conjunction activate and levitate in the froth by usual froth flotation process the metal values of zinc, bismuth, cobalt, nickel, titanium, zirconium, chromium, and uranium minerals; and for molybdenum and wolfram recovering the pulp of mineral slurry are oxidized with hydrogen peroxide, or any strong oxidizing agent and proceed as described above.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: December 7, 1982
    Inventor: Vojislav Petrovich
  • Ultra-black coating due to surface morphology
    Patent number: 4361630
    Abstract: The invention provides a method of producing an ultra-black surface coating, having an extremely high light absorption capacity, on a substrate, such as a metal, ceramic, glass, or plastic, the blackness being associated with a unique surface morphology consisting of a dense array of microscopic pores etched into the surface, as well as the resulting coated substrate.The ultra-black surface, which has a spectral reflectance on the order of about from 0.5 to 1.0% at wavelengths of light of about from 320 to 2140 nanometers, finds use as a solar collector in the field of solar energy.
    Type: Grant
    Filed: August 18, 1981
    Date of Patent: November 30, 1982
    Assignee: The United States of America as represented by the Secretary of the Commerce
    Inventor: Christian E. Johnson, Sr.
  • Metallic articles having dual layers of electroless metal coatings incorporating particulate matter
    Patent number: 4358922
    Abstract: Disclosed are processes and articles for composite electroless coatings comprising at least two distinct layers, the first layer comprising a metal and/or a metal alloy plus particulate matter and the second layer comprising a metal and/or a metal alloy and being substantially free of particulate matter.
    Type: Grant
    Filed: April 10, 1980
    Date of Patent: November 16, 1982
    Assignee: Surface Technology, Inc.
    Inventor: Nathan Feldstein
  • Composite coatings for open-end machinery parts
    Patent number: 4358923
    Abstract: Disclosed are processes and articles for composite electroless coatings comprising at least two distinct layers, the first layer comprising a metal and/or a metal alloy plus particulate matter and the second layer comprising a metal and/or a metal alloy and being substantially free of particulate matter.
    Type: Grant
    Filed: November 14, 1980
    Date of Patent: November 16, 1982
    Assignee: Surface Technology, Inc.
    Inventor: Nathan Feldstein
  • Tube material for sour wells of intermediate depths
    Patent number: 4358511
    Abstract: Directed to a nickel-chromium-molybdenum alloy containing about 1.3% to about 3% of aluminum plus titanium, which is particularly useful where corrosion resistance, strength and ductility are required, such as in oil well tubing.
    Type: Grant
    Filed: October 31, 1980
    Date of Patent: November 9, 1982
    Assignee: Huntington Alloys, Inc.
    Inventors: Darrell F. Smith, Jr., Edward F. Clatworthy
  • Blast furnace cast house pollutant suppression
    Patent number: 4357003
    Abstract: Method and apparatus for suppressing formation of pollutants in a blast furnace casting system by occluding oxidizing gases, including ambient air, from the molten iron and slag discharged from the furnace.
    Type: Grant
    Filed: September 24, 1980
    Date of Patent: November 2, 1982
    Assignee: Jones & Laughlin Steel Corporation
    Inventor: Stephen Vajda
  • Iron ore pellets containing magnesium oxide
    Patent number: 4356027
    Abstract: Iron ore pellets having superior reduction and load softening properties in blast furnace operations. The pellets are prepared from a raw material to which is added an amount of magnesia or a MgO feeding source such as that the ratio of MgO to the SiO.sub.2 content of the raw material is at least about 0.5 and the CaO content in the raw material is adjusted so that the ratio CaO/SiO.sub.2 is less than about 0.05.
    Type: Grant
    Filed: August 29, 1980
    Date of Patent: October 26, 1982
    Assignee: Kobe Steel, Limited
    Inventors: Takeshi Sugiyama, Shoji Shirouchi, Mamoru Onoda, Fumikazu Kawaguchi, Isao Fujita
  • Porous iron ore pellets
    Patent number: 4350523
    Abstract: Porous iron ore pellets and a process for manufacturing same, the pellets having a pore size distribution consisting of more than 30% of pores having a diameter greater than 10 microns and a balance of pores having a diameter smaller than 10 microns, a total porosity greater than 30%, and an FeO content less than 1% by weight.
    Type: Grant
    Filed: April 8, 1980
    Date of Patent: September 21, 1982
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Kazumasa Taguchi, Hiroshi Isako, Koichi Ikeda, Keisuke Honda, Masaru Kanemoto, Keishiro Hanaoka
  • Enamelling steel sheet
    Patent number: 4348229
    Abstract: An enamelling steel sheet comprising not larger than 0.10% carbon, 0.01 to 0.10% aluminum, 0.004 to 0.020% boron, 0.007 to 0.020% nitrogen, the balance being iron and unavoidable impurities.
    Type: Grant
    Filed: August 22, 1980
    Date of Patent: September 7, 1982
    Assignee: Nippon Steel Corporation
    Inventors: Kenichiro Suemune, Masami Osawa
  • Heat exchanger with bilayered metal end container for anticorrosive addition
    Patent number: 4347895
    Abstract: A membrane for the end surface of a container housing a corrosion inhibitor for engine coolant where the membrane is exposed to the coolant and corrodes when the corrosiveness of the coolant increases above a predetermined level. The membrane is formed of substantially the same metal or alloy as the radiator and has a thin layer thereon of a second metal so that in a corrosive environment, a galvanic cell is set up between the two metals to enhance the rate of corrosion of the membrane.
    Type: Grant
    Filed: January 5, 1981
    Date of Patent: September 7, 1982
    Assignee: Borg-Warner Corporation
    Inventor: John L. Zambrow
  • Reduction smelting process
    Patent number: 4344792
    Abstract: A process for recovering metal values from sulfide ores or concentrates by a fluid bed roast-reduction smelting-converting process which delivers to the reduction smelting furnace either a blend of dead roasted concentrate and green concentrate or a partially roasted concentrate, either feed mixed with a carbonaceous reductant and silica flux, and either feed containing only sufficient sulfur to produce a matte, in which the iron is present as metallic iron, and which has a sulfur deficiency of about 0% to about 25% with respect to base metals, and which is later converted to a low iron matte by blowing and slagging the iron with silica flux.
    Type: Grant
    Filed: February 26, 1981
    Date of Patent: August 17, 1982
    Assignee: Inco Ltd.
    Inventor: Charles E. O'Neill
  • Superconducting wire with improved strain characteristics
    Patent number: 4343867
    Abstract: A superconducting wire comprising a superconducting filament and a beryllium strengthened bronze matrix in which the addition of beryllium to the matrix permits a low volume matrix to exhibit reduced elastic deformation after heat treating which increases the compression of the superconducting filament on cooling and thereby improves the strain characteristics of the wire.
    Type: Grant
    Filed: July 20, 1981
    Date of Patent: August 10, 1982
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Thomas Luhman, Carl J. Klamut, Masaki Suenaga, David Welch
  • Deeply embossed sheet product
    Patent number: 4343866
    Abstract: A method of deep embossing of sheet material, generally metal, is disclosed. A small scale relief pattern is first embossed across the entire sheet and thereafter a deep embossment of spaced-apart protuberances is imparted to the sheet. Both patterns in combination produce a sheet useful for reflective thermal insulation without the risk of significantly puncturing the sheet.
    Type: Grant
    Filed: October 26, 1976
    Date of Patent: August 10, 1982
    Assignee: Manville Service Corporation
    Inventors: Nathan Oser, Edmund J. Niedzinski
  • Inhibition of carbon accumulation on metal surfaces
    Patent number: 4343658
    Abstract: Metal substrate surfaces are protected against carbon accumulation when exposed to an environment wherein carbon-containing gases are decomposed. The protection is accomplished by the use of tantalum and/or tungsten entities deposited and/or diffused into the surface of the substrate.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: August 10, 1982
    Assignee: Exxon Research & Engineering Co.
    Inventors: Rees T. K. Baker, James J. Chludzinski
  • Coated super-hard alloy articles
    Patent number: 4341834
    Abstract: A cutting tool or a wear-resistant mechanical part comprises: a substrate of WC, Co, TiC, and TaC with or without an inner coating layer of TiC, TiN or TiCN; an intermediate layer of a titanium oxycarbide formed on the surface of the substrate or the inner coating layer by carrying out a reaction thereon at a temperature of 800.degree. to 1,200.degree. C. of a halide of titanium, hydrogen, and carbon monoxide or carbon dioxide or a mixture thereof; and an outer coating layer of aluminum oxide formed on the outer surface of the intermediate layer. The thicknesses of the inner layer, the intermediate layer , and the outer coating layer are of the order of 0.5 to 20 microns, 0.5 to 20 microns, and 0.5 to 10 microns, respectively.
    Type: Grant
    Filed: February 5, 1979
    Date of Patent: July 27, 1982
    Assignee: Mitsubishi Kinzoku Kabushiki Kaisha
    Inventors: Noribumi Kikuchi, Yasuo Suzuki, Taijiro Sugizawa, Fumio Washizu