Patents by Inventor Liehpao Farng

Liehpao Farng 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).

  • Publication number: 20050137096
    Abstract: An engine lubricant that is substantially free of zinc and phosphorous contains an antiwear additive comprising borated 1,2 epoxy mixed polybutenes having an average carbon number in the range of C20 to about C120.
    Type: Application
    Filed: September 28, 2004
    Publication date: June 23, 2005
    Inventors: Beth Yoon, Liehpao Farng, George Skic
  • Publication number: 20050014659
    Abstract: An improved lubricating composition suitable for diesel engines comprising a major amount of at least one oil of lubricating viscosity and a minor amount of an alkylamine-alkylphosphate additive. The alkylamine-alkylphosphate additive comprises from at least 1.25 equivalents of alkylamine to 1.0 equivalents of alkylphosphate.
    Type: Application
    Filed: June 25, 2004
    Publication date: January 20, 2005
    Inventors: Kevin Crouthamel, Vincent Carey, Peter Calcavecchio, Evelyn Drake, Kevin Kelly, Liehpao Farng