Patents by Inventor Serge Riffard

Serge Riffard 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).

  • Lubricant base stocks with improved filterability
    Patent number: 8999901
    Abstract: Provided for are lubricant base stocks with improved filterability. The lubricant base stock includes a bright stock and an effective amount of a heavy neutral. The filterability of the base stock as measured by the Membrane Filtration Method is less than or equal to 400 seconds. Also provided for are lubricating oils with improved filterability and methods of improving the filterability of lubricant base stocks.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: April 7, 2015
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Kristen Amanda Lyon, Charles L. Baker, Jr., Serge Riffard
  • Lubricant base stocks with improved filterability
    Patent number: 8980803
    Abstract: Provided for are lubricant base stocks with improved filterability. The lubricant base stock includes a bright stock or a heavy neutral and an effective amount of a pour point depressant. The filterability of the base stock as measured by the Membrane Filtration Method is less than or equal to 400 seconds. Also provided for are lubricating oils with improved filterability and methods of improving the filterability of lubricant base stocks.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: March 17, 2015
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Kristen Amanda Lyon, Charles L. Baker, Jr., Serge Riffard
  • LUBRICANT BASE STOCKS WITH IMPROVED FILTERABILITY
    Publication number: 20140274827
    Abstract: Provided for are lubricant base stocks with improved filterability. The lubricant base stock includes a bright stock and an effective amount of a heavy neutral. The filterability of the base stock as measured by the Membrane Filtration Method is less than or equal to 400 seconds. Also provided for are lubricating oils with improved filterability and methods of improving the filterability of lubricant base stocks.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Inventors: Kristen Amanda Lyon, Charles L. Baker, JR., Serge Riffard