Granted Patent
Utility
US 4,569,858 · App. 06/695,771
Surface modification of hydrophilic contact lenses
Inventors:
Drahoslav Lim, Peter C. Morris
Patented Case
View Patent ↗
Granted: Feb 11, 1986
Filed: Jan 28, 1985
Inventors
Drahoslav Lim
Peter C. Morris
Assignee (at issue)
Barnes-Hind, 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.