Patents by Inventor Stephen E. Potter

Stephen E. Potter 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).

  • Manufacture of halogenated compounds
    Patent number: 4158675
    Abstract: Manufacture of 1,1,1,2-tetrafluoroethane by reacting 1,1,1-trifluoro-2-chloroethane with hydrogen fluoride in the presence of a chromium oxide catalyst and removing 1,1-difluoro-2-chloroethylene contaminant from the resulting impure asym tetrafluoroethane product by passing the impure product with hydrogen fluoride over a chromium oxide catalyst at much lower temperatures than are used in the manufacturing process.
    Type: Grant
    Filed: February 7, 1978
    Date of Patent: June 19, 1979
    Assignee: Imperial Chemical Industries Limited
    Inventor: Stephen E. Potter