Granted Patent
Utility
US 5,567,777 · App. 08/589,599
Cycloolefin copolymer composition and method for the preparation thereof
Inventors:
Yoichiro Tsuji, Yoshiharu Abe, Toshihiro Sagane, Toshimasa Takata
Patented Case
View Patent ↗
Granted: Oct 22, 1996
Filed: Jan 26, 1996
Inventors
Yoichiro Tsuji
Yoshiharu Abe
Toshihiro Sagane
Toshimasa Takata
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.