Patents Represented by Attorney, Agent or Law Firm Martin Fallon
  • Lubricating oil having enhanced resistance to oxidation, nitration and viscosity increase
    Patent number: 6756348
    Abstract: This invention is directed to an antioxidant system for use in lubricating oils comprising sulfurized isobutylene and hindered phenols that provides enhanced oxidation resistance and is particularly useful in natural gas fueled engines, the method for making this antioxidant system, lubricating oils comprising the antioxidant system and methods for lubricating engines using lubricating oil comprising this antioxidant system.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: June 29, 2004
    Assignee: Chevron Oronite Company LLC
    Inventors: John D. Palazzotto, Mark R. Logan