Patents by Inventor Robert E. Cowan

Robert E. Cowan 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).

  • Electrosurgical knife
    Patent number: 4161950
    Abstract: An electrosurgical knife blade of insulating material having a pair of electrodes adapted to be connected to a radiofrequency generator.
    Type: Grant
    Filed: August 1, 1975
    Date of Patent: July 24, 1979
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: James D. Doss, Robert E. Cowan, Robert H. Newell, Charles W. McCabe