Patents by Inventor Michael M. Kersker

Michael M. Kersker 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).

  • Heat treatment of precipitation hardening alloys
    Patent number: 5108520
    Abstract: An aging process for solution-heat-treated, precipitation hardening metal alloy includes first underaging the alloy, such that a yield strength below peak yield strength is obtained, followed by higher aging for improving the corrosion resistance of the alloy, followed by lower temperature aging to strength increased over that achieved initially.
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: April 28, 1992
    Assignee: Aluminum Company of America
    Inventors: John Liu, Michael M. Kersker
  • Aluminum alloy
    Patent number: 4681736
    Abstract: An aluminum alloy consisting essentially of about the following percentages of materials:Si=14 to 18Fe=0.4 to 2Cu=4 to 6Mg=up to 1Ni=4.5 to 10P=0.001 to 0.1 (recovered)remainder grain refiner, Al and incidental impurities.
    Type: Grant
    Filed: December 7, 1984
    Date of Patent: July 21, 1987
    Assignee: Aluminum Company of America
    Inventors: Michael M. Kersker, William G. Truckner, Douglas A. Granger, Elwin L. Rooy