Patents by Inventor Gordon L. Willette

Gordon L. Willette 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).

  • Polymeric antioxidant viscosity index improvers
    Patent number: 4098709
    Abstract: Polymers containing post-reacted hindered phenol anti-oxidant functionality as viscosity index (VI) improvers for high temperature service, particularly for lubricating oils used in diesel engines.
    Type: Grant
    Filed: June 10, 1977
    Date of Patent: July 4, 1978
    Assignee: Rohm and Haas Company
    Inventors: Richard H. Hanauer, Gordon L. Willette
  • Polymers containing anti-oxidant functionality
    Patent number: 4096319
    Abstract: Polymers containing anti-oxidant functionality have been found to be useful as viscosity index (VI) improvers for high temperature service. The anti-oxidant moiety prevents extensive oxidative decomposition of the polymer making the polymers particularly useful with lubricating oils used in diesel engines.
    Type: Grant
    Filed: December 11, 1975
    Date of Patent: June 20, 1978
    Assignee: Rohm and Haas Company
    Inventors: Gordon L. Willette, Richard H. Hanauer
  • Antioxidant-containing viscosity index improvers for high temperature service
    Patent number: 3951831
    Abstract: Antioxidant-containing viscosity index (VI) improvers for high temperature service are disclosed and claimed. These viscosity index improvers are particularly useful at high temperature. Therefore, they are particularly useful with lubricating oils used in diesel engines.
    Type: Grant
    Filed: January 17, 1975
    Date of Patent: April 20, 1976
    Assignee: Rohm and Haas Company
    Inventors: Gordon L. Willette, Richard H. Hanauer