Granted Patent
Utility
US 4,954,591 · App. 07/118,116
Abrasion resistant radiation curable coating for polycarbonate article
Inventor:
Hector Belmares
Patented Case
View Patent ↗
Granted: Sep 4, 1990
Filed: Nov 6, 1987
Inventor
Hector Belmares
Assignee (at issue)
Pilkington Visioncare Inc.
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.