Granted Patent
Utility
US 6,787,499 · App. 10/369,595
Catalyst for the production of &agr;-olefin and &agr;-olefin production method
Inventors:
Shinji Tanaka, Yasushi Shiraki, Takao Tamura, Masahiko Kuramoto, Haruhito Sato, Masami Watanabe
Patented Case
View Patent ↗
Granted: Sep 7, 2004
Filed: Feb 21, 2003
Inventors
Shinji Tanaka
Yasushi Shiraki
Takao Tamura
Masahiko Kuramoto
Haruhito Sato
Masami Watanabe
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.