Patents by Inventor Trevor Anthony Brettell

Trevor Anthony Brettell 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).

  • Lubricating oil compositions
    Patent number: 6060437
    Abstract: A lubricating oil composition for internal combustion engines comprises:(A) a major amount of a basestock of lubricating viscosity containing from greater than 35 to less than 70 mass % of one or more PAO's, the balance preferably being one or more Group I basestocks as defined in API 1509; and(B) two or more additive components such as an ashless dispersant and a metal detergent.
    Type: Grant
    Filed: July 29, 1998
    Date of Patent: May 9, 2000
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Robert Robson, Trevor Anthony Brettell