Patents by Inventor James Walter Finch

James Walter Finch 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).

  • Long life medium and high ash oils with enhanced nitration resistance
    Patent number: 6191081
    Abstract: A long life lubricating oil as evidenced by a reduction in viscosity increase, oxidation and nitration, comprises a major amount of a base oil of lubricating viscosity and a minor amount of a mixture of high TBN, medium TBN and low/neutral TBN detergents wherein metal salicylate detergent is at least one of the medium or low/neutral TBN detergents.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: February 20, 2001
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Stanley James Cartwright, James Walter Finch
  • Long life lubricating oil composition using particular detergent mixture
    Patent number: 6140282
    Abstract: A long life lubricating oil as evidenced by a reduction in viscosity increase, oxidation and nitration, comprises a major amount of a base oil of lubricating viscosity and a minor amount of a mixture of high TBN, medium TBN and low/neutral TBN detergents wherein metal salicylate detergent is at least one of the medium or low/neutral TBN detergents.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: October 31, 2000
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Stanley James Cartwright, James Walter Finch
  • Long life lubricating oil using detergent mixture
    Patent number: 6140281
    Abstract: A lubricating oil of enhanced life as evidenced by a reduction in viscosity increase, nitration, and TBN depletion and equivalent or improved oxidation and TAN increase performance relative to commercial oils comprises a major amount of a base oil of lubricating viscosity and a minor amount of a mixture of one or more metal sulfonate(s) and/or phenate(s) and one or more metal salicylate(s) detergents, all such detergents used in the mixture being of the same or substantially similar Total Base Number (TBN).
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: October 31, 2000
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Alan Gary Blahey, James Walter Finch, Stanley James Cartwright