Granted Patent
Utility
US 4,420,611 · App. 06/359,553
Stabilization of irradiated carboxymethyl cellulose
Inventor:
Bernard J. Scheve
Patented Case
View Patent ↗
Granted: Dec 13, 1983
Filed: Mar 18, 1982
Inventor
Bernard J. Scheve
Assignee (at issue)
HERCULES LLC
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.