Granted Patent
Utility
US 5,053,259 · App. 07/235,258
Amorphous nylon copolymer and copolyamide films and blends
Inventor:
Stephen J. Vicik
Patented Case
View Patent ↗
Granted: Oct 1, 1991
Filed: Aug 23, 1988
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.