Granted Patent
Utility
US 4,911,963 · App. 07/091,172
Multilayer film containing amorphous nylon
Inventors:
Stanley Lustig, Stephen J. Vicik
Patented Case
View Patent ↗
Granted: Mar 27, 1990
Filed: Aug 31, 1987
Inventors
Stanley Lustig
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.