Granted Patent
Utility
US 5,120,544 · App. 07/538,778
Crosslinked hydrogel and method for making same
Inventor:
Ernest J. Henley
Patented Case
View Patent ↗
Granted: Jun 9, 1992
Filed: Jun 15, 1990
Inventor
Ernest J. Henley
Assignee (at issue)
Henley International, 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.