Patents by Inventor Thomas Martin Warne

Thomas Martin Warne 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).

  • Hydraulic fluid
    Patent number: 3981813
    Abstract: A hydraulic fluid comprising a major proportion of a hydrocarbon oil having a viscosity of about 10-200 centistokes at 100.degree.F. and a minor proportion of a metal sulfonate, a higher molecular weight alkyl- or alkenyl-succinic acid or anhydride, a lower molecular weight alkyl- or alkenyl-succinic acid or anhydride, a nonionic emulsifier, and a hindered hydrocarbyl phenol.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: September 21, 1976
    Assignee: Standard Oil Company (Indiana)
    Inventors: Marvin J. Den Herder, Thomas Martin Warne