Granted Patent
Utility
US 5,494,969 · App. 08/187,142
Cycloolefin polymer composition
Inventors:
Yoshiharu Abe, Toshihiro Sagane, Yoichiro Tsuji
Patented Case
View Patent ↗
Granted: Feb 27, 1996
Filed: Jan 27, 1994
Inventors
Yoshiharu Abe
Toshihiro Sagane
Yoichiro Tsuji
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.