Granted Patent
Utility
US 4,690,695 · App. 06/850,045
Enhanced gas separation process
Inventor:
Kishore J. Doshi
Patented Case
View Patent ↗
Granted: Sep 1, 1987
Filed: Apr 10, 1986
Inventor
Kishore J. Doshi
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.