Granted Patent
Utility
US 4,078,112 · App. 05/704,532
Coating modification process for ultrafiltration systems
Inventor:
Alexander Armand Bibeau
Patented Case
View Patent ↗
Granted: Mar 7, 1978
Filed: Jul 12, 1976
Inventor
Alexander Armand Bibeau
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.