Granted Patent
Utility
US 5,652,034 · App. 07/767,599
Barrier properties for polymeric containers
Inventor:
Jerome A. Seiner
Patented Case
View Patent ↗
Granted: Jul 29, 1997
Filed: Sep 30, 1991
Inventor
Jerome A. Seiner
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.