Granted Patent
Utility
US 5,713,315 · App. 08/671,638
Multiple step valve opening control system
Inventors:
Hiroshi Jyoutaki, Kazutoshi Mori, Susumu Kohketsu, Yasunori Daigo, Yoshihisa Yamaki
Patented Case
View Patent ↗
Granted: Feb 3, 1998
Filed: Jun 28, 1996
Inventors
Hiroshi Jyoutaki
Kazutoshi Mori
Susumu Kohketsu
Yasunori Daigo
Yoshihisa Yamaki
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.