Granted Patent
Utility
US 5,559,199 · App. 08/426,252
Process for production of ethylene-cyclic olefin copolymer
Inventors:
Yoshiharu Abe, Toshihiro Sagane, Akinori Toyota
Patented Case
View Patent ↗
Granted: Sep 24, 1996
Filed: Apr 21, 1995
Inventors
Yoshiharu Abe
Toshihiro Sagane
Akinori Toyota
Assignees (at issue)
Mitsui Petrochemical Industries, Ltd.
Hoechst GmbH
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.