Patents by Inventor Edward E. Hardin

Edward E. Hardin 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).

  • Production of pitch and coke from raw petroleum coke
    Patent number: 4369171
    Abstract: Raw petroleum coke is treated with a solvent to extract the soluble matter. The extracted matter is useful as coker feedstock, fuel, pitch binder, pitch precursor, impregnant and carbon black feedstock. The coke residue may be used without further treatment as a fuel or may be calcined for use in Hall aluminum cell anodes.
    Type: Grant
    Filed: March 6, 1981
    Date of Patent: January 18, 1983
    Assignee: Great Lakes Carbon Corporation
    Inventors: Lloyd S. Grindstaff, Edward E. Hardin
  • Process for calcining and desulfurizing petroleum coke
    Patent number: 4291008
    Abstract: Low sulfur calcined coke having an adequate density value for industrial consumers is produced from high sulfur raw coke by treating the coke in three heating stages under controlled conditions, one of the stages being in the presence of added hydrogen.
    Type: Grant
    Filed: June 27, 1980
    Date of Patent: September 22, 1981
    Assignee: Great Lakes Carbon Corporation
    Inventors: Harry L. Hsu, Edward E. Hardin, Lloyd I. Grindstaff
  • Thermal desulfurization and calcination of petroleum coke
    Patent number: 4160814
    Abstract: Low sulfur calcined coke is produced from high sulfur raw coke without substantially lowering its bulk density by heating the coke at a first temperature such that no more than about 70 wt.% of the volatile matter is removed therefrom and then heating the partially devolatilized coke at a higher temperature sufficient to effect calcination and desulfurization.
    Type: Grant
    Filed: March 1, 1978
    Date of Patent: July 10, 1979
    Assignee: Great Lakes Carbon Corporation
    Inventors: Edward E. Hardin, Dean H. Guffey, Lloyd I. Grindstaff