Patents by Inventor Larry E. Thomas

Larry E. Thomas 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).

  • Maraging superalloys and heat treatment processes
    Patent number: 4572738
    Abstract: Described herein are nickel-chromium-iron maraging, gamma prime strengthened superalloys containing about 18 to 25 weight percent nickel, about 4 to 8 weight percent chromium, gamma prime forming elements such as aluminum and/or titanium, and a solid solution strengthening element, such as molybdenum. After heat treatment, which includes at least one ausaging treatment and at least one maraging treatment, a microstructure containing gamma prime phase and decomposed Fe-Ni-Cr type martensite is produced.
    Type: Grant
    Filed: April 21, 1982
    Date of Patent: February 25, 1986
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Michael K. Korenko, David S. Gelles, Larry E. Thomas