Patents by Inventor Gary H. Wickstrom

Gary H. Wickstrom 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).

  • Process for minimizing solids contamination of liquids from coal pyrolysis
    Patent number: 4263124
    Abstract: In a continuous process for recovery of liquid hydrocarbons from a solid carbonaceous material by pyrolysis of the carbonaceous material in the presence of a particulate source of heat, particulate contamination of the liquid hydrocarbons is minimized. This is accomplished by removing fines from the solid carbonaceous material feed stream before pyrolysis, removing fines from the particulate source of heat before combining it with the carbonaceous material to effect pyrolysis of the carbonaceous material, and providing a coarse fraction of reduced fines content of the carbon containing solid residue resulting from the pyrolysis of the carbonaceous material before oxidizing carbon in the carbon containing solid residue to form the particulate source of heat.
    Type: Grant
    Filed: June 5, 1979
    Date of Patent: April 21, 1981
    Assignee: Occidental Petroleum Corporation
    Inventors: Gary H. Wickstrom, Everett W. Knell, Benjamin W. Shaw, Yue G. Wang