Granted Patent
Utility
US 5,216,608 · App. 07/644,251
Apparatus and a method for estimating the friction coefficient of a road surface and controlling a driving condition of a vehicle in accordance with the estimated friction coefficient
Inventors:
Masayoshi Ito, Kiichi Yamada, Masayuki Hashiguchi, Keiji Isoda, Toshio Shigehara
Patented Case
View Patent ↗
Granted: Jun 1, 1993
Filed: Jan 22, 1991
Inventors
Masayoshi Ito
Kiichi Yamada
Masayuki Hashiguchi
Keiji Isoda
Toshio Shigehara
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.