Inventor
OYA SEIJI
JP24 patents
⚠️ This page may combine multiple inventors who share the name “OYA SEIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NGK SPARK PLUG CO
18 patentsUS8012325B2Sep 6, 2011
Plural-cell gas sensor with heater
NGK SPARK PLUG CO7 citations82
US7972488B2Jul 5, 2011
Sensor deterioration judging apparatus and sensor deterioration judging method
NGK SPARK PLUG CO11 citations81
US9752936B2Sep 5, 2017
Temperature sensor
NGK SPARK PLUG CO5 citations73
US9512770B2Dec 6, 2016
Sensor element including an air introduction portion with a cross section having specified aspect ratio and area and sensor including the same
NGK SPARK PLUG CO6 citations72
US10247695B2Apr 2, 2019
Electrode for gas sensor, and gas sensor
NGK SPARK PLUG CO2 citations70
US8012324B2Sep 6, 2011
Sensor element, method of manufacturing a sensor element, and gas sensor
NGK SPARK PLUG CO2 citations60
US10012611B2Jul 3, 2018
Gas sensor element and gas sensor
NGK SPARK PLUG CO1 citations50
US9739748B2Aug 22, 2017
Gas sensor and gas detection element
NGK SPARK PLUG CO1 citations50
US9791404B2Oct 17, 2017
Electrode for gas sensor, and gas sensor
NGK SPARK PLUG CO0 citations49
US9594048B2Mar 14, 2017
Heater and gas sensor element
NGK SPARK PLUG CO0 citations49
US10302505B2May 28, 2019
Temperature sensor
NGK SPARK PLUG CO0 citations48
US9989420B2Jun 5, 2018
Temperature sensitive element and temperature sensor
NGK SPARK PLUG CO0 citations48
US9766134B2Sep 19, 2017
Temperature sensitive element and temperature sensor
NGK SPARK PLUG CO1 citations48
US9528960B2Dec 27, 2016
Gas sensor element and gas sensor
NGK SPARK PLUG CO0 citations41
US9696274B2Jul 4, 2017
Gas sensor element and gas sensor
NGK SPARK PLUG CO0 citations39
US10254172B2Apr 9, 2019
Temperature sensor with improved sheath
NGK SPARK PLUG CO0 citations38
US10302503B2May 28, 2019
Temperature sensor
NGK SPARK PLUG CO0 citations37
US10186355B2Jan 22, 2019
Thermistor element and manufacturing method therefor
NGK SPARK PLUG CO0 citations37