Granted Patent
Utility
US 5,439,973 · App. 08/333,337
Cycloolefin resin composition
Inventors:
Sanehiro Yamamoto, Toshio Kimura, Takasi Nakagawa, Akinori Toyota
Patented Case
View Patent ↗
Granted: Aug 8, 1995
Filed: Nov 2, 1994
Inventors
Sanehiro Yamamoto
Toshio Kimura
Takasi Nakagawa
Akinori Toyota
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.