Granted Patent
Utility
US 4,650,501 · App. 06/841,233
Pressure swing adsorption process
Inventors:
Willis E. Hiscock, Robert T. Cassidy, Robert G. Werner
Patented Case
View Patent ↗
Granted: Mar 17, 1987
Filed: Mar 19, 1986
Inventors
Willis E. Hiscock
Robert T. Cassidy
Robert G. Werner
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.