Granted Patent
Utility
US 6,730,626 · App. 10/130,306
Transition metal compounds, polymerization catalysts for olefins, olefin polymers and process for their production
Inventors:
Takashi Kashiwamura, Takuji Okamoto
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: May 31, 2002
Inventors
Takashi Kashiwamura
Takuji Okamoto
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.