Patents by Inventor Simon J. Griffiths

Simon J. Griffiths 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).

  • Method of Viscosity Control
    Publication number: 20100212624
    Abstract: This invention relates to a method of lubricating an internal combustion engine comprising at least one of a crankcase, a gear and a wet-clutch, said method comprising supplying to said crankcase, gear and wet-clutch a lubricating composition comprising: (a) an oil of lubricating viscosity; and (b) a viscosity modifier with a number average molecular weight from 1000 to 75,000, wherein the lubricating composition has a SAE viscosity grade from XW-Y, wherein X is from 0 to 20 and Y is from 20 to 50; and wherein the lubricating composition has a phosphorus content from a metal hydrocarbyl dithiophosphate of 0.12 wt % or less.
    Type: Application
    Filed: May 4, 2010
    Publication date: August 26, 2010
    Inventors: Lewis D. Breon, Jayram D. Patel, Roy Sambuchino, Mark F. Wilkes, Simon J. Griffiths, David Price, Michael P. Gahagan