Granted Patent
Utility
US 4,474,590 · App. 06/500,726
Process for separation of gas mixture
Inventor:
Bernard A. Bucchianeri
Patented Case
View Patent ↗
Granted: Oct 2, 1984
Filed: Jun 3, 1983
Inventor
Bernard A. Bucchianeri
Assignee (at issue)
United States Steel 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.