Patents by Inventor John D. Bartleson

John D. Bartleson 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).

  • Amine antioxidant
    Patent number: 4269720
    Abstract: Organic material such as lubricating oil is stabilized against oxidative degradation by addition of an alkyl aniline (e.g. 2,4,6-triethylaniline; 2-sec-butyl-6-ethylaniline), monoethyldiphenylamine and/or N-(2-amino-3-ethyl-.alpha.-methylbenzylidene)-2,6-diethylaniline or mixtures thereof.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: May 26, 1981
    Assignee: Ethyl Corporation
    Inventors: John D. Bartleson, John C. Wollensak