Granted Patent
Utility
US 5,770,144 · App. 08/523,112
Method of forming improved apertured films by using fluid perforation
Inventors:
William A. James, William G. F. Kelly, Charles James Shimalla
Patented Case
View Patent ↗
Granted: Jun 23, 1998
Filed: Sep 1, 1995
Inventors
William A. James
William G. F. Kelly
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.