Patents by Inventor Stephen J. Marsh

Stephen J. Marsh 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
    Publication number: 20150240181
    Abstract: A low sulphated ash lubricating oil composition comprising an overbased magnesium salicylate detergent and an ashless alkylene bis(dihydrocarbyldithiocarbamate) which exhibits an extended drain interval.
    Type: Application
    Filed: February 26, 2014
    Publication date: August 27, 2015
    Inventors: Jonathan Ayutsede, Catherine H. Frampton, Laura Parsons, Stephen J. Marsh, Robert W. Shaw