Patents by Inventor Stephen C. McEntyre

Stephen C. McEntyre 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).

  • Anode retraction device for a Hall-Heroult cell equipped with inert anodes
    Patent number: 4500401
    Abstract: A compressed air-powered retractor for an inert anode in a Hall-Heroult cell is actuated after power interruption by a time delayed solenoid actuating a valve controlling the air supply to a cylinder connected to the anode support structure.
    Type: Grant
    Filed: December 27, 1983
    Date of Patent: February 19, 1985
    Assignee: Great Lakes Carbon Corporation
    Inventors: James M. Clark, Duane R. Secrist, Scotty L. Hardin, Stephen C. McEntyre