Patents by Inventor Ian P. Field

Ian P. Field 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 compositions with improved antioxidancy comprising added copper, a molybdenum containing compound, aromatic amine and ZDDP
    Patent number: 5994277
    Abstract: Crankcase lubricant compositions for use in automobile or truck engines comprise a major amount of a lubricating oil, added copper present in oil-soluble form, at least 2 ppm of molybdenum present in oil-soluble form, and a total of from 0.05 to 2 mass % of one or more oil-soluble aromatic amines. The specified additives provide a highly effective antioxidant system.
    Type: Grant
    Filed: April 3, 1996
    Date of Patent: November 30, 1999
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Andrew J. D. Ritchie, Harold Shaub, Ian P. Field