Patents by Inventor Claude C. Schauber

Claude C. Schauber 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).

  • Dispersant viscosity index improving additive for lubricating oils
    Patent number: 5851967
    Abstract: The present invention provides dispersant viscosity index improving additives for lubricating oils. The additives are copolymers comprising from 92 weight percent to 98 weight percent of a polymer backbone and from 2 weight percent to 8 weight percent branches grafted onto the polymer backbone.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: December 22, 1998
    Inventors: Claude C. Schauber, Nguyen Dinh Truong, David Sterett Moorman