Patents by Inventor Fred T. Crookshank

Fred T. Crookshank 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).

  • Corrosion-inhibited grease compositions
    Patent number: 4052322
    Abstract: Described are lubricating greases corrosion inhibited by a synergistic amount of a mixture of sodium nitrite and N-acyl sarcosines.The greases contain from 75 to 96 parts by weight, preferably 80 to 95 parts by weight of a mineral oil having a SUS viscosity of 50 to 2500 at 100.degree. F thickened to grease consistency with about 3 to 25, preferably 5 to 20, parts by weight of an alkali metal or alkaline earth metal soap or a mixture thereof.
    Type: Grant
    Filed: June 24, 1976
    Date of Patent: October 4, 1977
    Assignee: Texaco Inc.
    Inventor: Fred T. Crookshank