Granted Patent
Utility
US 4,501,551 · App. 06/550,424
Method for producing a dried particulate coal fuel from a particulate low rank coal
Inventors:
Louis P. Riess, Bernard F. Bonnecaze
Patented Case
View Patent ↗
Granted: Feb 26, 1985
Filed: Nov 10, 1983
Inventors
Louis P. Riess
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.