Granted Patent
Utility
US 4,396,394 · App. 06/333,142
Method for producing a dried coal fuel having a reduced tendency to spontaneously ignite from a low rank coal
Inventors:
Ying H. Li, James L. Skinner, Donald K. Wunderlich, J. David Matthews, Bernard F. Bonnecaze
Patented Case
View Patent ↗
Granted: Aug 2, 1983
Filed: Dec 21, 1981
Inventors
Ying H. Li
James L. Skinner
Donald K. Wunderlich
J. David Matthews
Bernard F. Bonnecaze
Assignee (at issue)
Atlantic Richfield Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.