Granted Patent
Utility
US 6,312,640 · App. 09/442,419
Process of making an apertured web
Inventor:
Charles James Shimalla
Patented Case
View Patent ↗
Granted: Nov 6, 2001
Filed: Nov 17, 1999
Inventor
Charles James Shimalla
Assignee (at issue)
McNeil-PPC, 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.