Granted Patent
Utility
US 4,387,247 · App. 06/158,552
Catalytic reduction of nitro aromatic compounds with hydrogen sulfide and carbon monoxide
Inventors:
Charles T. Ratcliffe, Geza Pap
Patented Case
View Patent ↗
Granted: Jun 7, 1983
Filed: Jun 11, 1980
Inventors
Charles T. Ratcliffe
Geza Pap
Assignee (at issue)
ALLIED CONSULTING, 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.