Granted Patent
Utility
US 5,652,303 · App. 08/567,876
Process for polymerizing olefins and catalyst for polymerizing olefins
Inventors:
Naoshi Ishimaru, Mamoru Kioka, Akinori Toyota
Patented Case
View Patent ↗
Granted: Jul 29, 1997
Filed: Dec 6, 1995
Inventors
Naoshi Ishimaru
Mamoru Kioka
Akinori Toyota
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.