Granted Patent
Utility
US 6,701,892 · App. 09/794,209
Throttle valve control apparatus of internal combustion engine and automobile using the same
Inventors:
Eisuke Wayama, Toshifumi Usui, Yoshikatsu Hashimoto, Shigeru Tokumoto, Yasuo Saito
Patented Case
View Patent ↗
Granted: Mar 9, 2004
Filed: Feb 28, 2001
Inventors
Eisuke Wayama
Toshifumi Usui
Yoshikatsu Hashimoto
Shigeru Tokumoto
Yasuo Saito
Assignees (at issue)
HITACHI, LTD.
HITACHI CAR ENGINEERING CO., 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.