Granted Patent
Utility
US 4,381,223 · App. 06/307,223
Process for the treatment of organic amine compositions
Inventors:
Charles A. Gibson, Moinuddin Ahmed, Michael Habenschuss
Patented Case
View Patent ↗
Granted: Apr 26, 1983
Filed: Sep 30, 1981
Inventors
Charles A. Gibson
Moinuddin Ahmed
Michael Habenschuss
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.