Patents by Inventor Hsingheng Li

Hsingheng Li 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: 20080051307
    Abstract: The invention provides a lubricating composition containing: (a) a major amount of an ester of a polycarboxylic acylating agent; and (b) at least one compound from: (i) a metal hydrocarbyl dithiophosphate, or (ii) a viscosity modifier, wherein the metal hydrocarbyl dithiophosphate contains at least one hydrocarbyl group including an aryl functional group, a substituted-aryl functional group or mixtures thereof. The composition is suitable for high temperature engines, particularly a ceramic containing engine to provide at least one of increased fuel economy, decreased emissions of particulate matter, increased oxidative stability and decreased deposit formation.
    Type: Application
    Filed: July 26, 2005
    Publication date: February 28, 2008
    Applicant: THE LUBRIZOL CORPORATION
    Inventor: Hsingheng Li