Patents by Inventor David R. Bridgeman

David R. Bridgeman 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).

  • Liquid phase ammoxidation of cyclohexanone and/or cyclohexanol
    Patent number: 4379925
    Abstract: Cyclohexanone and/or cyclohexanol can be ammoxidized in the liquid phase to heterocyclic compounds by contacting the cyclohexanone and/or cyclohexanol with various oxidation catalysts in the presence of molecular oxygen and ammonia.
    Type: Grant
    Filed: October 6, 1980
    Date of Patent: April 12, 1983
    Assignee: The Standard Oil Co.
    Inventors: Robert K. Grasselli, Dev D. Suresh, David R. Bridgeman