Patents by Inventor Edward L. Hibner

Edward L. Hibner 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).

  • Corrosion resistant nickel-base alloy
    Patent number: 5120614
    Abstract: A nickel-chromium-molybdenum-niobium alloy affords high resistance to aggressive corrosives, including chlorides which cause crevice corrosion and oxidizing acids which promote intergranular corrosion, the alloy also being readily weldable and possessing structural stability at very low as well as elevated temperatures. The alloy consists essentially of, (by weight), 19-23% Cr, 12-15% Mo, 2.25-4% W, 0.65-2% Nb, 2-8% Fe, balance Ni.
    Type: Grant
    Filed: October 21, 1988
    Date of Patent: June 9, 1992
    Assignee: Inco Alloys International, Inc.
    Inventors: Edward L. Hibner, Ralph W. Ross, Jr., James R. Crum
  • Corrosion-resistant nickel-chromium-molybdenum alloys
    Patent number: 5019184
    Abstract: A homogenizaton heat treatment for enhancing crevice and pitting corrosion resistance minimizes the formation of Mu phase in nickel-base alloys of high combined percentages of chromium, e.g., 19 to 23% and molybdenum, e.g., 14 to 17%, particularly together with tungsten. Also described is an advantageous alloy composition containing less than 2.5% iron, low carbon and a titanium to carbon ratio greater than 1 which is particularly adapted to be effectively treated by the homogenization heat treatment.
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: May 28, 1991
    Assignee: Inco Alloys International, Inc.
    Inventors: James R. Crum, Jon M. Poole, Edward L. Hibner