Patents by Inventor Bill Mitacek

Bill Mitacek 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).

  • Gear oil compositions
    Patent number: 4082680
    Abstract: Shear-stable, high viscosity index gear oil formulations are formed by the inclusion into such formulations of a small amount of a hydrogenated butadiene-styrene copolymer having a butadiene content of 30 to 44 weight percent and a weight average molecular weight in the range of about 12,000 to about 20,000.
    Type: Grant
    Filed: April 12, 1976
    Date of Patent: April 4, 1978
    Assignee: Phillips Petroleum Company
    Inventor: Bill Mitacek