Patents by Inventor John F. Plummer

John F. Plummer 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).

  • Foundry binder composition
    Patent number: 4246167
    Abstract: A foundry binder which contains certain fulvenes and/or prepolymers thereof, and an acid catalyst.
    Type: Grant
    Filed: May 25, 1979
    Date of Patent: January 20, 1981
    Assignee: Ashland Oil, Inc.
    Inventors: Robert A. Grimm, Heimo J. Langer, John F. Plummer