Granted Patent
Utility
US 4,839,030 · App. 07/199,493
Coal liquefaction process utilizing coal/CO.sub.2 slurry feedstream
Inventors:
Alfred G. Comolli, Joseph B. McLean
Patented Case
View Patent ↗
Granted: Jun 13, 1989
Filed: May 27, 1988
Inventors
Alfred G. Comolli
Joseph B. McLean
Assignee (at issue)
HRI
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.