Patents by Inventor Leonard F. Blankenship

Leonard F. Blankenship 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).

  • Tire tread
    Patent number: D379339
    Type: Grant
    Filed: September 22, 1995
    Date of Patent: May 20, 1997
    Assignee: Bridgestone/Firestone, Inc.
    Inventors: James G. Guspodin, Leonard F. Blankenship
  • Tire tread
    Patent number: D384618
    Type: Grant
    Filed: April 26, 1996
    Date of Patent: October 7, 1997
    Assignee: Bridgestone/Firestone, Inc.
    Inventors: James G. Guspodin, John J. Regallis, Leonard F. Blankenship, Elizabeth M. Beutler