Granted Patent
Utility
US 4,056,496 · App. 05/685,996
Hydrogels and articles made therefrom
Inventors:
William L. Mancini, Donald R. Korb, Miguel F. Refojo
Patented Case
View Patent ↗
Granted: Nov 1, 1977
Filed: May 13, 1976
Inventors
William L. Mancini
Donald R. Korb
Miguel F. Refojo
Assignee (at issue)
Corneal Sciences, 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.