Granted Patent
Utility
US 4,284,672 · App. 06/104,799
Flexible packaging composite comprising an outer polyamide layer, an intermediate metal foil layer and an interior heat-sealable layer
Inventor:
Nathan Stillman
Patented Case
View Patent ↗
Granted: Aug 18, 1981
Filed: Dec 18, 1979
Inventor
Nathan Stillman
Assignee (at issue)
Champion International Corporation Limited
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.