Granted Patent
Utility
US 5,480,718 · App. 07/873,623
Laminated film or sheet and box-shaped vessel prepared therefrom
Inventors:
Hiromi Shigemoto, Katsumi Noritomi
Patented Case
View Patent ↗
Granted: Jan 2, 1996
Filed: Apr 23, 1992
Inventors
Hiromi Shigemoto
Katsumi Noritomi
Assignee (at issue)
Mitsui Petrochemical Industries, Ltd.
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.