Patents by Inventor William C. Starr

William C. Starr 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).

  • Patent number: 4564440
    Abstract: Partial desulfurization in the range of about 30-90% during hydrotreating of a dewaxed lube oil basestock provides an increase in viscosity index of up to five numbers with less than about 5 wt. % yield loss, a consequence of the desulfurized compounds staying in the lube boiling range.
    Type: Grant
    Filed: July 11, 1983
    Date of Patent: January 14, 1986
    Assignee: Mobil Oil Corporation
    Inventors: William E. Garwood, William C. Starr, John W. Walker