Patents by Inventor John Henry Smythe

John Henry Smythe 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).

  • Two-cycle lubricating oil
    Patent number: 6610634
    Abstract: A two-cycle oil is disclosed consisting of a polybutene polymer, solvent and mineral oil which passes the JASO engine test for gasoline fueled two-cycle engines.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: August 26, 2003
    Assignee: Exxon Chemical Patents Inc.
    Inventors: George Mortimer Tiffany, III, George Conrad L'Heureux, John Henry Smythe
  • Two-cycle synthetic lubricating oil
    Patent number: 5965498
    Abstract: A two-cycle oil composition comprising: (a) 10-20% of a first synthetic ester base stock oil (a copolymer of an alpha-olefin with an ester of a dicarboxylic acid, viscosity 20 to 50 cSt at 100.degree. C.); (b) 18-30% of a second synthetic ester base stock oil (an oxo alcohol of a dicarboxylic acid, viscosity 3 to 10 cSt at 100.degree. C.; (c) 30-40% of a polybutene polymer (Mn 300-1500); (d) 15-25% of a nor liquid solvent (boiling point up to 300.degree. C., flash point of 60 .degree.-120.degree. C.); (e) 0.2 to 2.0% of an oil soluble copper compound, and (f) 0 to 5% of other lubricating oil additives.
    Type: Grant
    Filed: May 14, 1998
    Date of Patent: October 12, 1999
    Assignee: Exxon Chemical Patents Inc
    Inventor: John Henry Smythe