Granted Patent
Utility
US 4,370,455 · App. 06/101,470
Process for polymerizing or copolymerizing olefins
Inventors:
Takashi Ueda, Syuji Minami, Mamoru Kioka, Norio Kashiwa
Patented Case
View Patent ↗
Granted: Jan 25, 1983
Filed: Dec 10, 1979
Inventors
Takashi Ueda
Syuji Minami
Mamoru Kioka
Norio Kashiwa
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.