Patents by Inventor Ben B. Corson

Ben B. Corson 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).

  • Isomerization process
    Patent number: 3996249
    Abstract: The delta-4 isomer of tetrahydrophthalic anhydride is isomerized in the presence of a catalytic amount of palladium and selected acid anhydrides that liquify the normally solid delta-4 isomer at a temperature below its melting point. This permits the isomerization to be effected at relatively low temperatures and in relatively short times to produce a mixture of isomers of tetrahydrophthalic anhydride that is in the liquid state at temperatures in the range of room temperature.
    Type: Grant
    Filed: August 29, 1973
    Date of Patent: December 7, 1976
    Assignee: Koppers Company, Inc.
    Inventors: Ben B. Corson, William T. Gormley