Granted Patent
Utility
US 5,501,887 · App. 08/174,332
Resin laminate
Inventors:
Hiroshi Tanaka, Kozo Morishige, Katsushi Watanabe, Shigetoshi Kashiyama
Patented Case
View Patent ↗
Granted: Mar 26, 1996
Filed: Dec 28, 1993
Inventors
Hiroshi Tanaka
Kozo Morishige
Katsushi Watanabe
Shigetoshi Kashiyama
Assignees (at issue)
Mitsui Petrochemical Industries, Ltd.
Otsuka Pharmaceutical Factory, 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.