Patents by Inventor John O. Hawthorne

John O. Hawthorne 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).

  • Novel iron oxide catalysts
    Patent number: 4003850
    Abstract: Iron oxide catalysts prepared by absorbing iron pentacarbonyl upon a suitable support followed by oxidation to iron oxide.
    Type: Grant
    Filed: August 23, 1973
    Date of Patent: January 18, 1977
    Assignee: United States Steel Corporation
    Inventors: Robert H. Callighan, John O. Hawthorne