Granted Patent
Utility
US 5,698,751 · App. 08/498,598
Branched polyene compounds and production thereof
Inventors:
Tatsuyoshi Ishida, Masaaki Yasuda, Hitoshi Ohnishi, Noriaki Kihara, Toshihiro Sagane, Toshiyuki Tsutsui
Patented Case
View Patent ↗
Granted: Dec 16, 1997
Filed: Jul 6, 1995
Inventors
Tatsuyoshi Ishida
Masaaki Yasuda
Hitoshi Ohnishi
Noriaki Kihara
Toshihiro Sagane
Toshiyuki Tsutsui
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.