Granted Patent
Utility
US 6,656,401 · App. 09/978,392
Method for extrusion coating multiple webs
Inventor:
Gary H. Knauf
Patented Case
View Patent ↗
Granted: Dec 2, 2003
Filed: Oct 16, 2001
Inventor
Gary H. Knauf
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.