Patents by Inventor William Lawrence Mankins

William Lawrence Mankins has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6106643
    Abstract: Hot working a nickel-chromium alloy that contains by weight percent, 42 to 65 chromium, 0.002 to 0.1 calcium, 0.002 to 0.1 magnesium, 0 to 2 aluminum, about 0 to 5 cobalt, 0 to 3 copper, 0 to 5 iron, 0 to 5 manganese, 0 to 3 molybdenum, 0 to 3 niobium, 0 to 2 silicon, 0 to 3 tantalum, 0 to 5 titanium, 0 to 5 tungsten, 0 to 5 vanadium, 0 to 1 zinc, 0 to 0.2 carbon 0 to 0.1 silver, 0 to 0.1 cerium, 0 to 0.1 phosphorus, 0 to 0.1 sulfur, less than 0.005 total boron, rare earths and zirconium and balance nickel and incidental impurities, at a temperature of at least 800.degree. C. improves formability for .alpha.-phase chromium alloys.
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: August 22, 2000
    Assignee: Inco Alloys International, Inc.
    Inventors: Francis Sardovia Suarez, Donald Edward Camus, William Lawrence Mankins
  • Patent number: 5945067
    Abstract: The alloy consists of an age hardenable-corrosion resistant alloy useful for oil and gas applications that require resistance to low-level sour gas conditions. This alloy contains, by weight percent, 20 to 36 nickel, 18 to 25 chromium, 1 to 8 molybdenum, 1.2 to 4 titanium, less than 0.5 aluminum, 0.001 to 0.5 carbon, less than 1.5 niobium, less than 10 manganese, less than 5 copper, less than 4 cobalt, less than 0.1 total calcium, cerium and magnesium, 0 to 0.01 boron and balance iron and incidental impurities and deoxidizers.
    Type: Grant
    Filed: October 23, 1998
    Date of Patent: August 31, 1999
    Assignee: Inco Alloys International, Inc.
    Inventors: Edward Lee Hibner, William Lawrence Mankins, Rickey Dale Corn
  • Patent number: 5827377
    Abstract: A nickel-base alloy having characteristics midway between selected stainless steels and INCONEL.RTM. alloy 625LCF.RTM.. Flexible and particularly useful for exhaust system bellows, wires and braids, the alloy includes about 24-42% nickel, about 18-28% chromium, 1.5-6% molybdenum, 0.2-1 % titanium, up to 1% aluminum, the balance iron, and up to about 1.4% silicon. The alloy demonstrates a novel characteristic of becoming stronger and more ductile during contemplated service temperatures of about 800.degree.-1400.degree. F. (427.degree. C.-760.degree. C.).
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: October 27, 1998
    Assignee: INCO Alloys International, Inc.
    Inventors: James Roy Crum, Gaylord Darrell Smith, Vernon William Hartmann, William Lawrence Mankins