Granted Patent
Utility
US 4,351,646 · App. 06/158,802
Cyclic process for producing methane from carbon monoxide with heat removal
Inventors:
Albert C. Frost, Chang-Lee Yang
Patented Case
View Patent ↗
Granted: Sep 28, 1982
Filed: Jun 12, 1980
Inventors
Albert C. Frost
Chang-Lee Yang
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.