Patents by Inventor Jorge O. Pain

Jorge O. Pain 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: 7018958
    Abstract: A lubricating oil composition having a total base number of at least about 8, comprising a major amount of oil of lubricating viscosity; an amount of one or more dihydrocarbyl dithiophosphate metal salt introducing into the lubricating oil composition no more than 0.06 wt. % of phosphorus; at least 1.2 wt. % of hindered phenol antioxidant; and boron, and/or a boron-containing compound or compounds in an amount providing the lubricating oil composition with at least 200 ppm by weight of boron, all weight percentages being based on the total weight of the lubricating oil composition.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: March 28, 2006
    Assignee: Infineum International Limited
    Inventors: Stephen Arrowsmith, Nancy Z. Diggs, Andrew J. D. Ritchie, Jorge O. Pain
  • Lubricating oil compositions
    Publication number: 20040077506
    Abstract: A lubricating oil composition having a total base number of at least about 8, comprising a major amount of oil of lubricating viscosity; an amount of one or more dihydrocarbyl dithiophosphate metal salt introducing into the lubricating oil composition no more than 0.06 wt. % of phosphorus; at least 1.2 wt. % of hindered phenol antioxidant; and boron, and/or a boron-containing compound or compounds in an amount providing the lubricating oil composition with at least 200 ppm by weight of boron, all weight percentages being based on the total weight of the lubricating oil composition.
    Type: Application
    Filed: October 22, 2002
    Publication date: April 22, 2004
    Inventors: Stephen Arrowsmith, Nancy Z. Diggs, Andrew J. D. Ritchie, Jorge O. Pain