Granted Patent
Utility
US 5,423,203 · App. 08/092,527
Failure determination method for O.sub.2 sensor
Inventors:
Koichi Namiki, Takuya Matsumoto, Toru Hashimoto, Yasuhisa Yoshida
Patented Case
View Patent ↗
Granted: Jun 13, 1995
Filed: Jul 16, 1993
Inventors
Koichi Namiki
Takuya Matsumoto
Toru Hashimoto
Yasuhisa Yoshida
Assignee (at issue)
MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
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.