Granted Patent
Utility
US 5,401,364 · App. 08/219,529
Process for treating noncaking, noncoking coal to form char with process derived gaseous fuel having a variably controllable calorific heating value
Inventor:
Franklin G. Rinker
Patented Case
View Patent ↗
Granted: Mar 28, 1995
Filed: Mar 28, 1994
Inventor
Franklin G. Rinker
Assignee (at issue)
SGI International, Inc.
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.