Granted Patent
Utility
US 5,786,765 · App. 08/840,132
Apparatus for estimating the drowsiness level of a vehicle driver
Inventors:
Sae Kumakura, Toru Hara, Yoshihiro Goi
Patented Case
View Patent ↗
Granted: Jul 28, 1998
Filed: Apr 11, 1997
Inventors
Sae Kumakura
Toru Hara
Yoshihiro Goi
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.