Patents by Inventor Robert L. Fullman

Robert L. Fullman 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).

  • Steel nitriding method and apparatus
    Patent number: 4417927
    Abstract: Ammonia is used in the hardening of steels in a nitriding process which is controlled to limit or prevent formation of undesired iron nitrides by measuring the difference between input and output gas flow rates to and from the nitriding chamber and adjusting the input gas composition and/or flow rate in response to that difference to provide a predetermined desired composition of the nitriding atmosphere in the chamber.
    Type: Grant
    Filed: March 29, 1982
    Date of Patent: November 29, 1983
    Assignee: General Electric Company
    Inventor: Robert L. Fullman