Granted Patent
Utility
US 4,340,398 · App. 06/265,659
Pressure swing adsorption recovery
Inventors:
Kishore J. Doshi, Kirit Patel
Patented Case
View Patent ↗
Granted: Jul 20, 1982
Filed: May 20, 1981
Inventors
Kishore J. Doshi
Kirit Patel
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.