Granted Patent
Utility
US 5,034,503 · App. 07/598,126
Novel imido copolymers
Inventor:
Yves Camberlin
Patented Case
View Patent ↗
Granted: Jul 23, 1991
Filed: Oct 16, 1990
Inventor
Yves Camberlin
Assignee (at issue)
RHONE-POULENC CHIMIE
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.