Patents by Inventor James E. Longfield

James E. Longfield 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).

  • Polyepichlorohydrin elastomers having improved resistance to sour gasoline
    Patent number: 4434275
    Abstract: Vulcanizable polyepichlorohydrin elastomers which, upon vulcanization, exhibit improved resistance to sour gasoline are prepared by incorporating thereinto an amount of a polythiodiethanol elastomer.
    Type: Grant
    Filed: September 23, 1982
    Date of Patent: February 28, 1984
    Assignee: American Cyanamid Company
    Inventor: James E. Longfield