Patents by Inventor Henry E. Grindstaff

Henry E. Grindstaff 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 assembly for molten salt electrolysis
    Patent number: 4626333
    Abstract: An anode assembly for an electrolytic cell for molten electrolysis has a cermet connector with a lower electrical resistivity than the anode threaded into the cermet or ceramic anode in the green or calcined state and then sintered to form an anode assembly having a low joint resistance at the cell operating temperature.
    Type: Grant
    Filed: January 28, 1986
    Date of Patent: December 2, 1986
    Assignee: Great Lakes Carbon Corporation
    Inventors: Duane R. Secrist, James M. Clark, Henry E. Grindstaff
  • Anode assembly for molten salt electrolysis
    Patent number: 4443314
    Abstract: An improved anode assembly for an aluminum electrolysis cell is formed by the process of shaping an anode 10 and a cermet connector 12 from powders, machining said articles, and sintering said articles. The cermet connector mates with the anode via a threaded joint located at its region of high temperature 14 during operation thereof to avoid excessive ohmic losses. Mechanical support can be provided by the threaded joint or through the use of separate mechanical suspension bars 22.
    Type: Grant
    Filed: March 16, 1983
    Date of Patent: April 17, 1984
    Assignee: Great Lakes Carbon Corporation
    Inventors: Duane R. Secrist, James M. Clark, Henry E. Grindstaff