Patents by Inventor John C. Orth

John C. Orth 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).

  • Removal of sulfur from coal and pitch with dolomite
    Patent number: 5246470
    Abstract: The sulfur in bituminous coal can be converted to calcium sulfate instead of sulfur dioxide during combustion when it is mixed with petroleum pitch and calcium oxide, calcium carbonate or dolomite.
    Type: Grant
    Filed: December 2, 1992
    Date of Patent: September 21, 1993
    Assignee: Lloyd Berg
    Inventors: Lloyd Berg, John W. Berg, John C. Orth
  • Dissolution of coal with petroleum pitch
    Patent number: 5125932
    Abstract: A meltable pumpable homogeneous carbonaceous mixture is produced by mixing powdered coal into molten petroleum pitch.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: June 30, 1992
    Assignee: Lloyd Berg
    Inventors: John C. Orth, Lloyd Berg