Granted Patent
Utility
US 6,358,576 · App. 09/022,825
Clay-filled polymer barrier materials for food packaging applications
Inventors:
Ashok M. Adur, Raymond A. Volpe, Keith S. Shih
Patented Case
View Patent ↗
Granted: Mar 19, 2002
Filed: Feb 12, 1998
Inventors
Ashok M. Adur
Raymond A. Volpe
Keith S. Shih
Assignee (at issue)
INTERNATIONAL PAPER COMPANY
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.