Granted Patent
Utility
US 5,362,811 · App. 08/187,910
Process for preparing cycloolefin random copolymer pellets
Inventors:
Tomoko Sueyoshi, Kenji Wakatsuru, Masayuki Okabe
Patented Case
View Patent ↗
Granted: Nov 8, 1994
Filed: Jan 28, 1994
Inventors
Tomoko Sueyoshi
Kenji Wakatsuru
Masayuki Okabe
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.