Inventor
OKUMURA TATSUO
JP5 patents
Patents
5 patentsUS6375828B2Apr 23, 2002
Methods and apparatus for measuring NOx gas concentration, for detecting exhaust gas concentration and for calibrating and controlling gas sensor
NGK SPARK PLUG CO82 citations97
US6923902B2Aug 2, 2005
Methods and apparatus for measuring NOx gas concentration, for detecting exhaust gas concentration and for calibrating and controlling gas sensor
NGK SPARK PLUG CO40 citations95
US6743352B2Jun 1, 2004
Method and apparatus for correcting a gas sensor response for moisture in exhaust gas
NGK SPARK PLUG CO48 citations95
US6695964B1Feb 24, 2004
Method and apparatus for measuring NOx gas concentration
NGK SPARK PLUG CO33 citations91
US6214208B1Apr 10, 2001
Method and apparatus for measuring NOx gas concentration
NGK SPARK PLUG CO36 citations91