Patents Represented by Attorney David Wright Tremaine

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  • Vegetable oil derivatives as lubricant additives
    Patent number: 4970010
    Abstract: There is disclosed lubricant additives that comprise combination of vegetable oil as a triglyceride or a wax ester, sulfurized triglyceride vegetable oil or sulfurized wax ester of vegetable oil, and phosphite adducts of triglyceride vegetable oil, wax ester of vegetable oil or jojoba oil. There is also disclosed a process for sulfurizing triglyceride vegetable oil that is soluble in a lubricant base, such as mineral oil.
    Type: Grant
    Filed: December 9, 1988
    Date of Patent: November 13, 1990
    Assignee: International Lubricants, Inc.
    Inventors: Frank L. Erickson, Robert E. Anderson, Phillip S. Landis