Granted Patent
Utility
US 4,328,148 · App. 06/216,434
Compositions comprising water and hydrophilic polymers and contact lenses therefrom
Inventor:
Petr Kuzma
Patented Case
View Patent ↗
Granted: May 4, 1982
Filed: Dec 15, 1980
Inventor
Petr Kuzma
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.