Granted Patent
Utility
US 6,573,352 · App. 09/424,985
Olefinic polymer
Inventors:
Tomio Tatsumi, Shuji Machida, Mitsugu Kanzawa, Yutaka Minami, Yasuhiro Goto, Masato Kijima
Patented Case
View Patent ↗
Granted: Jun 3, 2003
Filed: Dec 3, 1999
Inventors
Tomio Tatsumi
Shuji Machida
Mitsugu Kanzawa
Yutaka Minami
Yasuhiro Goto
Masato Kijima
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.