Granted Patent
Utility
US 4,673,719 · App. 06/563,320
Process for producing olefin polymers and catalyst composition therefor
Inventors:
Mamoru Kioka, Norio Kashiwa
Patented Case
View Patent ↗
Granted: Jun 16, 1987
Filed: Dec 20, 1983
Inventors
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.