Granted Patent
Utility
US 5,344,679 · App. 07/685,950
Amorphous nylon copolymer and copolyamide films and blends
Inventor:
Stephen J. Vicik
Patented Case
View Patent ↗
Granted: Sep 6, 1994
Filed: Apr 16, 1991
Inventor
Stephen J. Vicik
Assignee (at issue)
Viskase Companies, 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.