Granted Patent
Utility
US 5,478,617 · App. 08/313,254
Multi-layer film and container
Inventors:
Katsushi Watanabe, Shigetoshi Kashiyama
Patented Case
View Patent ↗
Granted: Dec 26, 1995
Filed: Oct 4, 1994
Inventors
Katsushi Watanabe
Shigetoshi Kashiyama
Assignees (at issue)
Otsuka Pharmaceutical Factory, Inc.
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.