Granted Patent
Utility
US 6,224,973 · App. 09/391,957
Multi-layer sheet suitable as sealable sheet
Inventor:
Yves Trouilhet
Patented Case
View Patent ↗
Granted: May 1, 2001
Filed: Sep 8, 1999
Inventor
Yves Trouilhet
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND 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.