Granted Patent
Utility
US 5,648,142 · App. 08/545,450
Perforated films having channels with cutout portions capable of spontaneous fluid inversion
Inventor:
Bobby M. Phillips
Patented Case
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Granted: Jul 15, 1997
Filed: Oct 19, 1995
Inventor
Bobby M. Phillips
Assignee (at issue)
Eastman Chemical 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.