Granted Patent
Utility
US 4,294,974 · App. 06/104,259
Hydrophilic silicone compounds and contact lenses containing polymers thereof
Inventor:
Albert R. LeBoeuf
Patented Case
View Patent ↗
Granted: Oct 13, 1981
Filed: Dec 17, 1979
Inventor
Albert R. LeBoeuf
Assignee (at issue)
American Optical 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.