Patents by Inventor Frederick T. Clark

Frederick T. Clark 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).

  • Process for regenerating spent heavy hydrocarbon hydroprocessing catalyst
    Patent number: 4994423
    Abstract: The present invention relates to a spent hydroprocessing catalyst regeneration process wherein the catalyst is subjected to an initial partial decoking step, followed by impregnation with a Group IIA metal-containing component, and then subjected to a final decoking step.
    Type: Grant
    Filed: May 25, 1990
    Date of Patent: February 19, 1991
    Assignee: Amoco Corporation
    Inventors: Frederick T. Clark, Albert L. Hensley, Jr.