Patents by Inventor Benjamin R. Elvidge

Benjamin R. Elvidge 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 oil composition
    Patent number: 9181511
    Abstract: The present invention relates to lubricating oil compositions comprising sulfurised esters that exhibit good antioxidancy performance whilst maintaining nitrile elastomer seal compatibility
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: November 10, 2015
    Assignee: INFINEUM INTERNATIONAL LIMITED
    Inventors: Benjamin R. Elvidge, Nancy Z. Diggs, Neal J. Milne, Nigel A. Male
  • Lubricating oil composition
    Patent number: 8318646
    Abstract: A lubricating oil composition comprising (A) an oil of lubricating viscosity in a major amount; and, (B) as an additive component in a minor amount, an oil-soluble zinc salt of a dithiophosphoric acid, the dithiophosphoric acid being the reaction product of phosphorus pentasulphide with a mixture of at least one first alcohol of the formula ROH where R is an aliphatic hydrocarbyl group having at least four carbon atoms or is an alkaryl group, and at least one second alcohol which is an ester of a polyhydric alcohol.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: November 27, 2012
    Assignee: Infineum International Limited
    Inventors: Mark D. Andrews, Benjamin R. Elvidge
  • LUBRICATING OIL COMPOSITION
    Publication number: 20120103299
    Abstract: A lubricating oil composition that is free of organic friction modifiers, comprising (A) an oil of lubricating viscosity in a major proportion; (B) as an additive component in a minor proportion, a separately-prepared oil-soluble zinc salt of a dithiophosphoric acid, the dithiophosphoric acid being the reaction product of phosphorus pentasulphide with one or more alcohols, at least 50 mole % of the alcohol(s) having formula ROH where R is linear C18 to C26 saturated or double-bond unsaturated hydrocarbyl group; and (C) as an additive component in a minor proportion, a separately-prepared oil-soluble zinc salt of a dithiophosphoric acid, the dithiophosphoric acid being the reaction product of a phosphorus pentasulphide with one or more aliphatic alcohols consisting of an alcohol or alcohols each having from three to eight carbon atoms.
    Type: Application
    Filed: June 9, 2010
    Publication date: May 3, 2012
    Inventors: Benjamin R. Elvidge, Mark D. Andrews
  • Lubricating oil compositions
    Patent number: 8101558
    Abstract: A composition containing an oil of lubricating viscosity in a concentrate-forming or major amount; and, as an additive component, an oil-soluble or oil dispersible mononuclear molybdenum compound having a molybdenum atom having bonded thereto one or more diazenide ligands and one or more hydrocarbyl group-carrying ligands, other than diazenide ligands, the hydrocarbyl groups conferring oil-solubility or oil-dispersibility on the molybdenum compound.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: January 24, 2012
    Assignee: Infineum International Limited
    Inventors: Benjamin R. Elvidge, Aleka Hinni, Jonathan Dilworth
  • Lubricating Oil Composition
    Publication number: 20100256029
    Abstract: The present invention relates to lubricating oil compositions comprising sulfurised esters that exhibit good antioxidancy performance whilst maintaining nitrile elastomer seal compatibility
    Type: Application
    Filed: April 1, 2009
    Publication date: October 7, 2010
    Inventors: Benjamin R. Elvidge, Nancy Z. Diggs, Neal J. Milne, Nigel A. Male
  • Lubricating Oil Compositions
    Publication number: 20100242887
    Abstract: A composition containing an oil of lubricating viscosity in a concentrate-forming or major amount; and, as an additive component, an oil-soluble or oil dispersible mononuclear molybdenum compound having a molybdenum atom having bonded thereto one or more diazenide ligands and one or more hydrocarbyl group-carrying ligands, other than diazenide ligands, the hydrocarbyl groups conferring oil-solubility or oil-dispersibility on the molybdenum compound.
    Type: Application
    Filed: December 1, 2009
    Publication date: September 30, 2010
    Inventors: Benjamin R. Elvidge, Aleka Hinni, Jonathan Dilworth
  • Lubricating Oil Composition
    Publication number: 20100062956
    Abstract: A lubricating oil composition comprising (A) an oil of lubricating viscosity in a major amount; and, (B) as an additive component in a minor amount, an oil-soluble zinc salt of a dithiophosphoric acid, the dithiophosphoric acid being the reaction product of phosphorus pentasulphide with a mixture of at least one first alcohol of the formula ROH where R is an aliphatic hydrocarbyl group having at least four carbon atoms or is an alkaryl group, and at least one second alcohol which is an ester of a polyhydric alcohol.
    Type: Application
    Filed: September 3, 2009
    Publication date: March 11, 2010
    Inventors: Mark D. Andrews, Benjamin R. Elvidge