Granted Patent
Utility
US 5,354,820 · App. 07/999,654
Process for the preparation of olefin polymer
Inventor:
Hideo Funabashi
Patented Case
View Patent ↗
Granted: Oct 11, 1994
Filed: Dec 29, 1992
Inventor
Hideo Funabashi
Assignee (at issue)
Idemitsu Petrochemical Co., 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.