Patents by Inventor Ellen McDonald Williams

Ellen McDonald Williams 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: D450293
    Type: Grant
    Filed: July 26, 2000
    Date of Patent: November 13, 2001
    Assignee: Michelin Recherche et Technique S.A.
    Inventor: Ellen McDonald Williams