Granted Patent
Utility
US 4,735,634 · App. 06/901,481
Pillared cobalt complexes for oxygen separation
Inventors:
John Anthony Thomas Norman, Dorai Ramprasad, Daryle Hadley Busch
Patented Case
View Patent ↗
Granted: Apr 5, 1988
Filed: Aug 28, 1986
Inventors
John Anthony Thomas Norman
Dorai Ramprasad
Daryle Hadley Busch
Assignee (at issue)
Air Products and Chemicals, Inc.
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.