Granted Patent
Utility
US 5,266,325 · App. 07/621,346
Preparation of homogeneous hydrogel copolymers
Inventors:
Petr Kuzma, Daniel G. Moro, Harry Quandt
Patented Case
View Patent ↗
Granted: Nov 30, 1993
Filed: Dec 3, 1990
Inventors
Petr Kuzma
Daniel G. Moro
Harry Quandt
Assignee (at issue)
Hydro Med Science Division of National Patent Development Corp.
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.