Granted Patent
Utility
US 6,775,608 · App. 10/349,966
Air-fuel ratio control using virtual exhaust gas sensor
Inventor:
Yuji Yasui
Patented Case
View Patent ↗
Granted: Aug 10, 2004
Filed: Jan 24, 2003
Inventor
Yuji Yasui
Assignee (at issue)
HONDA MOTOR 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.