Patents by Inventor Darrell F. Smith

Darrell F. Smith 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).

  • Low expansion superalloy with improved toughness
    Patent number: 5425912
    Abstract: A high strength, low coefficient of thermal expansion superalloy exhibiting improved toughness over a broad temperature range down to about 4.degree. K. The composition is adapted for use with wrought superconducting sheathing.
    Type: Grant
    Filed: July 7, 1994
    Date of Patent: June 20, 1995
    Assignees: Inco Alloys International, Inc., Massachusetts Institute Of Technology
    Inventors: Darrell F. Smith, Larry I. Stein, Il S. Hwang