Granted Patent
Utility
US 4,242,105 · App. 06/083,473
Process for producing methane from gas streams containing carbon monoxide and hydrogen
Inventor:
Albert C. Frost
Patented Case
View Patent ↗
Granted: Dec 30, 1980
Filed: Oct 10, 1979
Inventor
Albert C. Frost
Assignee (at issue)
Union Carbide Corporation
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.