Patents by Inventor Diane D. Martin

Diane D. Martin 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).

  • Oil ring for casting
    Patent number: 4940078
    Abstract: Oil rings of increased life are provided on the basis of compositions selected to provide increased effective amounts of lattice-contracting atomic species.
    Type: Grant
    Filed: November 30, 1988
    Date of Patent: July 10, 1990
    Assignee: Aluminum Company of America
    Inventor: Diane D. Martin