Patents by Inventor Richard Joseph Hart

Richard Joseph Hart 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).

  • Additive for hydrocarbon oils
    Patent number: 5833721
    Abstract: An antifoam additive for hydrocarbon oils and in particular fuel oils comprises the combination of an antifoam agent and an ashless dispersant.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: November 10, 1998
    Assignee: Exxon Chemical Patents Inc
    Inventors: Richard Joseph Hart, Rinaldo Caprotti