Patents by Inventor Thomas Frederick Holden

Thomas Frederick Holden 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).

  • Sulfurized compositions
    Patent number: 4119550
    Abstract: Sulfurized compositions are prepared by the reaction of unsaturated compounds and a mixture of sulfur and hydrogen sulfide under superatmospheric pressure, followed by removal of low boiling materials. They are useful as lubricant additives.
    Type: Grant
    Filed: July 11, 1977
    Date of Patent: October 10, 1978
    Assignee: The Lubrizol Corporation
    Inventors: Kirk Emerson Davis, Thomas Frederick Holden