Granted Patent
Utility
US 4,400,575 · App. 06/224,440
Methanation of gas streams containing carbon monoxide and hydrogen
Inventor:
Albert C. Frost
Patented Case
View Patent ↗
Granted: Aug 23, 1983
Filed: Jan 12, 1981
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.