Patents by Inventor Matthew D. Irving

Matthew D. Irving 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 compositions
    Patent number: 8759262
    Abstract: A lubricating oil composition for internal combustion engines, particularly heavy duty diesel (HDD) engines, having reduced phosphorus, sulfur and sulfated ash contents that provide excellent piston cleanliness performance and contain an amount of phenate detergent that introduces a relatively large amount of phenate soap into the lubricating oil composition.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: June 24, 2014
    Assignee: Infineum International Limited
    Inventors: Matthew D. Irving, Stephen Arrowsmith
  • Lubricating oil compositions
    Patent number: 8709988
    Abstract: Lubricating oil compositions having a sulfated ash content of no more than 1.0 mass %, which contain a major amount of oil of lubricating viscosity, a minor amount of calcium salicylate detergent, an amount of a magnesium-based detergent providing at least 200 ppm of magnesium, and a basic, low molecular weight, nitrogen-containing dispersant, which compositions provide improved top ring wear protection in internal combustion engines.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: April 29, 2014
    Assignee: Infineum International Limited
    Inventors: Stephen Arrowsmith, Matthew D. Irving
  • Lubricating Oil Composition
    Publication number: 20110245120
    Abstract: A lubricating oil composition having a phosphorus content of up to 0.12 wt %, a sulfated ash content of up to 1.2 wt % comprising (a) a major amount of an oil of lubricating viscosity; (b) an alkali metal or alkaline earth metal alkyl salicylate lubricating oil detergent providing from 7-15 mmol salicylate soap per kilogram of lubricating oil composition; (c) one or more dispersants providing the lubricating oil composition with from at least 0.12 wt % to 0.20 wt % atomic nitrogen, based on the weight of the lubricating oil composition, and (d) a dispersant-viscosity modifier.
    Type: Application
    Filed: March 30, 2011
    Publication date: October 6, 2011
    Inventors: Richard D. Bertram, Daniel Whyte, Matthew D. Irving
  • Lubricating oil compositions
    Patent number: 7906469
    Abstract: Lubricating oil compositions having a sulfated ash content of no more than 1.0 mass %, which contain a major amount of oil of lubricating viscosity, a minor amount of calcium salicylate detergent, an amount of a magnesium-based detergent providing the lubricating oil composition with at least 200 ppm of magnesium, an amount of a sulfur-containing molybdenum compound providing the lubricating oil composition with at least 20 ppm of molybdenum, and at least one nitrogen-containing dispersant providing the lubricating oil composition with at least 0.9 mass % nitrogen, which compositions provide improved top ring wear protection in internal combustion engines.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: March 15, 2011
    Assignee: Infineum International Limited
    Inventors: Stephen Arrowsmith, Matthew D. Irving
  • Lubricating oil compositions
    Patent number: 6869919
    Abstract: Soot induced kinematic viscosity increase of lubricating oil compositions for diesel engines equipped with EGR systems can be ameliorated by selection of viscosity modifier, lubricating oil flow improvers, detergents and/or dispersants.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: March 22, 2005
    Assignee: Infineum International Ltd.
    Inventors: Andrew J. D. Ritchie, Jai G. Bansal, Jacob Emert, Glen P. Fetterman, Antonio Gutierrez, Matthew D. Irving, Christopher J. Locke, Michael T. Minotti
  • EGR equipped diesel engines and lubricating oil compositions
    Patent number: 6715473
    Abstract: Soot induced kinematic viscosity increase of lubricating oil compositions for heavy duty diesel engines equipped with EGR systems operating in a condensing mode can be ameliorated by selection of viscosity modifier, lubricating oil flow improvers, detergents and dispersants.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: April 6, 2004
    Assignee: Infineum International Ltd.
    Inventors: Andrew J. D. Ritchie, Jai G. Bansal, Jacob Emert, Glen P. Fetterman, Antonio Gutierrez, Matthew D. Irving, Christopher J. Locke, Michael T. Minotti
  • Lubricating oil compositions
    Publication number: 20040048753
    Abstract: Soot induced kinematic viscosity increase of lubricating oil compositions for diesel engines equipped with EGR systems can be ameliorated by selection of viscosity modifier, lubricating oil flow improvers, detergents and/or dispersants.
    Type: Application
    Filed: September 10, 2002
    Publication date: March 11, 2004
    Inventors: Andrew J.D. Ritchie, Jai G. Bansal, Jacob Emert, Glen P. Fetterman, Antonio Gutierrez, Matthew D. Irving, Christopher J. Locke, Michael T. Minotti
  • EGR EQUIPPED DIESEL ENGINES AND LUBRICATING OIL COMPOSITIONS
    Publication number: 20040025853
    Abstract: Soot induced kinematic viscosity increase of lubricating oil compositions for heavy duty diesel engines equipped with EGR systems operating in a condensing mode can be ameliorated by selection of viscosity modifier, lubricating oil flow improvers, detergents and dispersants.
    Type: Application
    Filed: July 30, 2002
    Publication date: February 12, 2004
    Inventors: Andrew J. D. Ritchie, Jai G. Bansal, Jacob Emert, Glen P. Fetterman, Antonio Gutierrez, Matthew D. Irving, Christopher J. Locke, Michael T. Minotti