Inventor
YAMADA TESSHO
JP12 patents
⚠️ This page may combine multiple inventors who share the name “YAMADA TESSHO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NGK SPARK PLUG CO
10 patentsUS5357750AOct 25, 1994
Method for detecting deterioration of catalyst and measuring conversion efficiency thereof with an air/fuel ratio sensor
NGK SPARK PLUG CO75 citations96
US6344134B1Feb 5, 2002
Method for measuring NOx concentration and NOx concentration sensor
NGK SPARK PLUG CO37 citations92
US6120677ASep 19, 2000
Temperature control for all range oxygen sensor
NGK SPARK PLUG CO47 citations92
US6099717AAug 8, 2000
Method of and apparatus for detecting a deteriorated condition of a wide range air-fuel ratio sensor
NGK SPARK PLUG CO28 citations92
US5433830AJul 18, 1995
Method of activating zirconia oxygen sensor
NGK SPARK PLUG CO30 citations92
US5288389AFeb 22, 1994
Oxygen sensor with higher resistance to repeated thermal-shocks and shorter warm-up time
NGK SPARK PLUG CO43 citations92
US5174885ADec 29, 1992
Air fuel ratio sensor
NGK SPARK PLUG CO31 citations92
US5700367ADec 23, 1997
Method and apparatus for controlling the energizing of a heater in an oxygen sensor
NGK SPARK PLUG CO24 citations91
US5976350ANov 2, 1999
Method of and apparatus for detecting an activated condition of a wide range air-fuel ratio sensor
NGK SPARK PLUG CO12 citations73
US4932238AJun 12, 1990
Control system and method for controlling plant having high order lag
NGK SPARK PLUG CO5 citations62