Granted Patent
Utility
US 4,583,994 · App. 06/377,029
Cyclic process for producing methane in a tubular reactor with effective heat removal
Inventors:
Albert C. Frost, Chang-Lee Yang
Patented Case
View Patent ↗
Granted: Apr 22, 1986
Filed: May 11, 1982
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.