Patents by Inventor Theodore E. Hubbell

Theodore E. Hubbell 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).

  • Ion-beam nitriding of steels
    Patent number: 4704168
    Abstract: A surface of a steel substrate is nitrided without external heating by exposing it to a beam of nitrogen ions under a low pressure. The pressure is much lower than that employed for ion-nitriding, and an ion source is used instead of a glow discharge. Both of these features reduce the introduction of impurities into the substrate surface.
    Type: Grant
    Filed: January 29, 1986
    Date of Patent: November 3, 1987
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Joshua Salik, Theodore E. Hubbell