Granted Patent
Utility
US 4,702,898 · App. 06/920,277
Process for the removal of acid gases from gas mixtures
Inventor:
Bhadra S. Grover
Patented Case
View Patent ↗
Granted: Oct 27, 1987
Filed: Oct 17, 1986
Inventor
Bhadra S. Grover
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.