Patents by Inventor Alisdair J. Brown

Alisdair J. Brown 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: 7026273
    Abstract: A crankcase lubricating oil composition comprises an oil of lubricating viscosity, in a major amount, and, in respective minor amounts, a boron-containing additive and one or more co-additives, wherein the lubricating oil composition has greater than 200 ppm by mass of boron, less than 600 ppm by mass of phosphorus and less than 4000 ppm by mass of sulfur, based on the mass of the oil composition. Such compositions demonstrate provide improved wear performance.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: April 11, 2006
    Assignee: Infineum International Limited
    Inventors: Robert Robson, Roger W. Glyde, Alisdair J. Brown, Simon S. M. Chung, Stephen Arrowsmith
  • Lubricant compositions
    Patent number: 6953771
    Abstract: A lubricating oil composition comprising, or made by mixing, a major amount of an oil of lubricating viscosity and a minor amount of at least one compound comprising a polynuclear molybdenum core having bonded thereto one or more monoanionic ligands capable of rendering the compound oil-soluble or oil-dispersible, and further comprising at least one ionic species that is not required to confer oil-solubility or oil-dispersibility to the compound, wherein the combination of said one or more monoanionic ligands and said at least one ionic species confers electrical neutrality to the compound and wherein the ratio of the number of molybdenum atoms in the core to the number of said ligands is greater than 1:1.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: October 11, 2005
    Assignee: Infineon International Limited
    Inventors: Jonathan M. McConnachie, Ian A. W. Bell, Alisdair J. Brown, Edward I. Stiefel, Ernestine W. Hill
  • Lubricant composition
    Publication number: 20040147415
    Abstract: A lubricant composition comprising a major amount of an oil of lubricating viscosity and a minor amount of:
    Type: Application
    Filed: September 30, 2003
    Publication date: July 29, 2004
    Inventors: Alisdair J. Brown, Roger W. Glyde, Rebecca Castle, Jane Gilmore, Simon S. M. Chung, Rolfe J. Hartley
  • Combination of a low ash lubricating oil composition and low sulfur fuel
    Publication number: 20040127371
    Abstract: A lubricating oil composition for use in an internal combustion engine operated with a fuel having a sulphur content of less than 50 ppm, that contains a minor amount of at least one metal-containing detergent, which lubricating oil composition, when formulated for use in a diesel engine has a total ash content of less than 1.0 wt. %, and when formulated for use in a gasoline engine has a total ash content of less than 0.7 wt. %.
    Type: Application
    Filed: August 27, 2003
    Publication date: July 1, 2004
    Inventors: Stephen Arrowsmith, Alisdair J. Brown
  • Lubricant compositions
    Publication number: 20030224951
    Abstract: A lubricating oil composition comprising, or made by mixing, a major amount of an oil of lubricating viscosity and a minor amount of at least one compound comprising a polynuclear molybdenum core having bonded thereto one or more monoanionic ligands capable of rendering the compound oil-soluble or oil-dispersible, and further comprising at least one ionic species that is not required to confer oil-solubility or oil-dispersibility to the compound, wherein the combination of said one or more monoanionic ligands and said at least one ionic species confers electrical neutrality to the compound and wherein the ratio of the number of molybdenum atoms in the core to the number of said ligands is greater than 1:1
    Type: Application
    Filed: January 27, 2003
    Publication date: December 4, 2003
    Inventors: Jonathan M. McConnachie, Ian A. W. Bell, Alisdair J. Brown, Edward I. Stiefel, Ernestine W. Hill
  • Lubricating oil compositions
    Publication number: 20030148895
    Abstract: A crankcase lubricating oil composition comprises an oil of lubricating viscosity, in a major amount, and, in respective minor amounts, a boron-containing additive and one or more co-additives, wherein the lubricating oil composition has greater than 200 ppm by mass of boron, less than 600 ppm by mass of phosphorus and less than 4000 ppm by mass of sulfur, based on the mass of the oil composition. Such compositions demonstrate provide improved wear performance.
    Type: Application
    Filed: October 22, 2002
    Publication date: August 7, 2003
    Inventors: Robert Robson, Roger W. Glyde, Alisdair J. Brown, Simon S. M. Chung, Stephen Arrowsmith
  • Manufacture of lubricant additives
    Patent number: 6569820
    Abstract: Oil-soluble or oil-dispersible trinuclear molybdenum-sulfur compounds are made by reacting, in a polar medium, a reactant molybdenum compound containing an anion that possesses a trinuclear molybdenum core, and a dithiocarbamate that is produced in situ.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: May 27, 2003
    Assignee: Infineum International Ltd.
    Inventors: Jonathan M. McConnachie, Ian A. W. Bell, Edward I. Stiefel, Stanley J. Brois, Ernestine W. Hill, Alisdair J. Brown
  • Lubricant compositions
    Patent number: 6541429
    Abstract: A lubricating oil composition is provided comprising a major amount of an oil of lubricating viscosity and a minor amount of, as an additive, at least one compound comprising a polynuclear molybdenum core and bonded thereto one or more anionic ligands capable of rendering the compound oil-soluble or oil-dispersible, wherein the ratio of the number of molybdenum atoms in the core to the number of said ligands is 1:1, such as 3:2 or greater.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: April 1, 2003
    Assignee: Infineum International Ltd.
    Inventors: Jonathan M. McConnachie, Ian A.W. Bell, Alisdair J. Brown, Edward I. Stiefel, Ernestine W. Hill
  • Lubricant compositions
    Publication number: 20010056043
    Abstract: A lubricating oil composition is provided comprising a major amount of an oil of lubricating viscosity and a minor amount of, as an additive, at least one compound comprising a polynuclear molybdenum core and bonded thereto one or more anionic ligands capable of rendering the compound oil-soluble or oil-dispersible, wherein the ratio of the number of molybdenum atoms in the core to the number of said ligands is 1:1, such as 3:2 or greater.
    Type: Application
    Filed: March 23, 2001
    Publication date: December 27, 2001
    Inventors: Jonathan M. McConnachie, Ian A. W. Bell, Alisdair J. Brown, Edward I. Stiefel, Ernestine W. Hill
  • Manufacture of lubricant additives
    Publication number: 20010053751
    Abstract: Oil-soluble or oil-dispersible trinuclear molybdenum-sulfur compounds are made by reacting, in a polar medium, a reactant molybdenum compound containing an anion that possesses a trinuclear molybdenum core, and a dithiocarbamate that is produced in situ.
    Type: Application
    Filed: March 23, 2001
    Publication date: December 20, 2001
    Inventors: Jonathan M. McConnachie, Ian A. W. Bell, Edward I. Stiefel, Stanley J. Brois, Ernestine W. Hill, Alisdair J. Brown
  • Lubricating oil compositions
    Patent number: 6211123
    Abstract: A lubricating oil composition is provided comprising a major amount of an oil of lubricating viscosity and a minor amount of, as an additive, at least one compound comprising a trinuclear tungsten core and bonded thereto a ligand or ligands capable of rendering the compound oil-soluble or oil-dispersible.
    Type: Grant
    Filed: June 17, 1999
    Date of Patent: April 3, 2001
    Assignee: Infineum USA L.P.
    Inventors: Alisdair J. Brown, Ian A. W. Bell, John A. Cleverley, Jose M. G. Gomes, Edward I. Stiefel, Jonathan M. McConnachie