Patents by Inventor David E. Ramsey

David E. Ramsey 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).

  • Electrode composition
    Patent number: 4233148
    Abstract: Electrodes suitable for the electrolysis of solutions, in particular for the production of aluminum in Hall-Heroult reduction cells, are composed of SnO.sub.2 with various amounts of conductive agents and sintering promoters principally GeO.sub.2, Co.sub.3 O.sub.4, Bi.sub.2 O.sub.3, Sb.sub.2 O.sub.3, MnO.sub.2, CuO, Pr.sub.2 O.sub.3, In.sub.2 O.sub.3, MoO.sub.3.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: November 11, 1980
    Assignee: Great Lakes Carbon Corporation
    Inventors: David E. Ramsey, Lloyd I. Grindstaff