Granted Patent
Utility
US 5,728,439 · App. 08/759,905
Multilayer packaging material for oxygen sensitive food and beverage
Inventors:
Leland H. Carlblom, Jerome A. Seiner, Ken W. Niederst
Patented Case
View Patent ↗
Granted: Mar 17, 1998
Filed: Dec 4, 1996
Inventors
Leland H. Carlblom
Jerome A. Seiner
Ken W. Niederst
Assignee (at issue)
PPG Industries, 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.