Granted Patent
Utility
US 5,658,525 · App. 08/511,267
Cellulose food casing manufacturing method
Inventors:
Edward Makoto Kajiwara, Norman A. Portnoy, Paul Edmund DuCharme, Jr.
Patented Case
View Patent ↗
Granted: Aug 19, 1997
Filed: Aug 4, 1995
Inventors
Edward Makoto Kajiwara
Norman A. Portnoy
Paul Edmund DuCharme, Jr.
Assignee (at issue)
Viskase Companies, 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.