Inventor
OTSUKA TAKAKI
JP4 patents
Patents
4 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
US6344134B1Feb 5, 2002
Method for measuring NOx concentration and NOx concentration sensor
NGK SPARK PLUG CO37 citations92