Granted Patent
Utility
US 5,438,110 · App. 08/328,568
Process for polymerizing olefins and polymerization catalyst therefor
Inventors:
Naoshi Ishimaru, Mamoru Kioka, Akinori Toyota
Patented Case
View Patent ↗
Granted: Aug 1, 1995
Filed: Oct 24, 1994
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.