Granted Patent
Utility
US 4,976,898 · App. 07/384,589
Process for making puncture resistant, heat-shrinkable films containing very low density polyethylene
Inventors:
Stanley Lustig, Nancy M. Mack, Jeffrey M. Schuetz, Stephen J. Vicik
Patented Case
View Patent ↗
Granted: Dec 11, 1990
Filed: Jul 25, 1989
Inventors
Stanley Lustig
Nancy M. Mack
Jeffrey M. Schuetz
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.