Granted Patent
Utility
US 5,104,692 · App. 07/516,510
Two-layer antireflective coating applied in solution
Inventor:
Hector Belmares
Patented Case
View Patent ↗
Granted: Apr 14, 1992
Filed: Apr 20, 1990
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.