Patents by Inventor James E. Junkin

James E. Junkin 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).

  • Control of pyrite addition in coal liquefaction process
    Patent number: 4364818
    Abstract: Pyrite addition to a coal liquefaction process (22, 26) is controlled (118) in inverse proportion to the calcium content of the feed coal to maximize the C.sub.5 --900.degree. F. (482.degree. C.) liquid yield per unit weight of pyrite added (110). The pyrite addition is controlled in this manner so as to minimize the amount of pyrite used and thus reduce pyrite contribution to the slurry pumping load and disposal problems connected with pyrite produced slag.
    Type: Grant
    Filed: July 15, 1981
    Date of Patent: December 21, 1982
    Assignee: The Pittsburg & Midway Coal Mining Co.
    Inventors: Bruce K. Schmid, James E. Junkin