Patents Examined by Jacquieline V. Howard
  • Lubricating oil compositions
    Patent number: 5652202
    Abstract: Copolymers and functionalised copolymers comprising ethylene units, in combination with non ethylene copolymer derivatives, give improved engine piston cleanliness when used as lubricating oil additives.
    Type: Grant
    Filed: August 15, 1995
    Date of Patent: July 29, 1997
    Assignee: Exxon Chemical Patents Inc.
    Inventor: David Robert Adams