Granted Patent
Utility
US 4,933,408 · App. 07/296,170
Vinylic macromers containing perfluoropolyalkyl ether and polyalkyl ether segments, polymers and opthalmic devices made therefrom
Inventor:
Merrill Goldenberg
Patented Case
View Patent ↗
Granted: Jun 12, 1990
Filed: Jan 11, 1989
Inventor
Merrill Goldenberg
Assignee (at issue)
Ciba-Geigy
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.