Patents by Inventor Francis H. Schmidt

Francis H. Schmidt 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).

  • Corrosion inhibitor compositions
    Patent number: 4214876
    Abstract: Improved corrosion inhibitor compositions for hydrocarbon fuels consisting of mixtures of (a) about 75 to 95 weight percent of a polymerized unsaturated aliphatic monocarboxylic acid having about 16 to 18 carbons, and (b) about 5 to 25 weight percent of a monoalkenylsuccinic acid wherein the alkenyl group has 8 to 18 carbons. Also described are concentrates of the above compositions in hydrocarbon solvents, as well as fuels containing the compositions.
    Type: Grant
    Filed: December 12, 1978
    Date of Patent: July 29, 1980
    Assignee: E. I. Du Pont de Nemours & Company
    Inventors: Bruce H. Garth, Francis H. Schmidt