Patents by Inventor Francois E. Didot

Francois E. Didot 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).

  • Tertiary diamide as swelling agent for elastomeric seal
    Patent number: 3933663
    Abstract: An improved method of transmitting power in a hydraulically operated mechanism which comprises adding to the operative liquid a certain amount of a tertiary diamide having the following structural formula: ##EQU1## wherein ##EQU2## and wherein R R H, alkyl radical having C.sub.1 -C.sub.5m = 2-8x = 1-5The tertiary diamide imparts to the liquid the property of swelling seals in the mechanical system and thereby prevents leakage.
    Type: Grant
    Filed: December 10, 1973
    Date of Patent: January 20, 1976
    Assignee: Sun Ventures, Inc.
    Inventors: Robert M. Thompson, Francois E. Didot