Granted Patent
Utility
US 4,589,888 · App. 06/658,306
Pressure swing adsorption process
Inventors:
Willis E. Hiscock, Robert T. Cassidy, Robert G. Werner
Patented Case
View Patent ↗
Granted: May 20, 1986
Filed: Oct 5, 1984
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.