Patents by Inventor John D. Askew, Jr.

John D. Askew, Jr. 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).

  • Oxidation inhibited lubricating oil
    Patent number: 4125479
    Abstract: Lubricating oils with superior oxidation inhibition result from the combination of additives in a lubricating oil base; the ashless additive combination comprising methylene bis(dibutyl dithiocarbamate) and 4-methyl-2,6-ditertiary butyl phenol. The above combination of additives displays synergistic activity as an oxidation inhibitor.
    Type: Grant
    Filed: December 13, 1976
    Date of Patent: November 14, 1978
    Assignee: Texaco Inc.
    Inventors: Ralph P. Chesluk, John D. Askew, Jr., Clifton C. Henderson