Patents by Inventor Charles H. Bovington

Charles H. Bovington 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).

  • Low viscosity lubricating oil compositions
    Patent number: 6720293
    Abstract: A low viscosity lubricating oil composition having a CCS viscosity less than 3500 mPa.s at −25° C. and having no more than 0.16 mass % of phosphorus which comprises a dispersant, and a detergent of calcium or magnesium or both; and optionally a zinc dihydrocarbyldithiophosphate, a viscosity modifier, a pour point depressant and an antioxidant. The oil satisfies the Cummins M11 cross-head wear engine test specification in a low phosphorus and low viscosity formulation.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: April 13, 2004
    Assignee: Infineum International Ltd.
    Inventors: Charles H. Bovington, Christopher J. Locke, Terence Kelly
  • Marine diesel cylinder lubrication
    Patent number: 6596673
    Abstract: The cylinders of a two-stroke cross-head marine diesel engine characterised by a power output of 4,000 kW per cylinder or greater are lubricated by a cylinder lubricant comprising a basestock of lubricating viscosity, on overbased metal detergent and an oil-soluble sulfur-containing compound or phosphorus-containing compound, thereby to raise the onset temperature of scuffing-type mechanical wear of the cylinder walls.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: July 22, 2003
    Assignee: Infineum International Ltd.
    Inventors: Charles H. Bovington, Terence Garner
  • Heavy duty diesel engine lubricating oil compositions
    Publication number: 20030134758
    Abstract: The use of an effective amount of one or more compounds capable of reducing friction coefficients under mixed lubrication or boundary lubrication conditions in a heavy duty diesel engine lubricating oil composition for improving the fuel economy of a heavy duty diesel engine.
    Type: Application
    Filed: December 12, 2002
    Publication date: July 17, 2003
    Inventors: Charles H. Bovington, Stephen Arrowsmith, Rebecca C. Castle, Peter Wrench
  • Low viscosity lubricating oil compositions
    Publication number: 20020058593
    Abstract: A low viscosity lubricating oil composition having a CCS viscosity less than 3500 mPa.s at −25° C. and having no more than 0.16 mass % of phosphorus which comprises a dispersant, and a detergent of calcium or magnesium or both; and optionally a zinc dihydrocarbyldithiophosphate, a viscosity modifier, a pour point depressant and an antioxidant. The oil satisfies the Cummins M11 cross-head wear engine test specification in a low phosphorus and low viscosity formulation.
    Type: Application
    Filed: September 24, 2001
    Publication date: May 16, 2002
    Inventors: Charles H. Bovington, Christopher J. Locke, Terence Kelly