Granted Patent
Utility
US 4,806,136 · App. 07/133,429
Air separation method with integrated gas turbine
Inventors:
Donna F. Kiersz, Karen D. Parysek
Patented Case
View Patent ↗
Granted: Feb 21, 1989
Filed: Dec 15, 1987
Inventors
Donna F. Kiersz
Karen D. Parysek
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.