Inventor
OKAMOTO TAKU
JP53 patents
⚠️ This page may combine multiple inventors who share the name “OKAMOTO TAKU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NGK INSULATORS LTD
48 patentsUS10545072B2Jan 28, 2020
Catalyst degradation diagnostic method and catalyst degradation diagnostic system
NGK INSULATORS LTD11 citations85
US8043760B2Oct 25, 2011
Electrochemical cell stacks
NGK INSULATORS LTD10 citations84
US10428717B2Oct 1, 2019
Method for diagnosing degradation in catalyst
NGK INSULATORS LTD12 citations83
US10125656B2Nov 13, 2018
Method for diagnosing degradation of catalyst and catalyst degradation diagnosis system
NGK INSULATORS LTD11 citations83
US10125657B2Nov 13, 2018
Method for diagnosing degradation of catalyst and catalyst degradation diagnosis system
NGK INSULATORS LTD11 citations83
US12372494B2Jul 29, 2025
Gas sensor
NGK INSULATORS LTD2 citations72
US12372493B2Jul 29, 2025
Gas sensor
NGK INSULATORS LTD2 citations72
US11015510B2May 25, 2021
Catalyst deterioration diagnosis system and catalyst deterioration diagnosis method
NGK INSULATORS LTD2 citations72
US10527569B2Jan 7, 2020
Gas-sensor diagnosing method
NGK INSULATORS LTD3 citations72
US10480385B2Nov 19, 2019
Apparatus for measuring combustible-gas concentration, system for measuring combustible-gas concentration, system for treating exhaust gas, method for measuring combustible-gas concentration, and method for deriving constant
NGK INSULATORS LTD2 citations72
US11174807B2Nov 16, 2021
Operation control method of vehicle engine and vehicle system
NGK INSULATORS LTD0 citations62
US10996191B2May 4, 2021
Sensor element and gas sensor
NGK INSULATORS LTD1 citations62
US10914696B2Feb 9, 2021
Gas-sensor diagnosing method
NGK INSULATORS LTD0 citations62
US10557817B2Feb 11, 2020
Method of inspecting electrode provided in gas sensor element
NGK INSULATORS LTD1 citations62
US10488380B2Nov 26, 2019
Apparatus for measuring ammonia concentration, system for measuring ammonia concentration, system for treating exhaust gas, and method for measuring ammonia concentration
NGK INSULATORS LTD1 citations62
US10329988B2Jun 25, 2019
Apparatus for measuring ammonia concentration, system for measuring ammonia concentration, system for treating exhaust gas, and method for measuring ammonia concentration
NGK INSULATORS LTD1 citations62
US12366550B2Jul 22, 2025
Gas sensor
NGK INSULATORS LTD0 citations60
US12590922B2Mar 31, 2026
Gas sensor and concentration correction method for use in gas sensor
NGK INSULATORS LTD0 citations52
US12546741B2Feb 10, 2026
Gas sensor
NGK INSULATORS LTD0 citations52
US12352722B2Jul 8, 2025
Gas sensor
NGK INSULATORS LTD0 citations52
US11391690B2Jul 19, 2022
Sensor element and gas sensor
NGK INSULATORS LTD0 citations52
US11378543B2Jul 5, 2022
Gas sensor and sensor element
NGK INSULATORS LTD0 citations52
US11378542B2Jul 5, 2022
Gas sensor
NGK INSULATORS LTD0 citations52
US11293894B2Apr 5, 2022
Gas sensor and method of producing gas sensor
NGK INSULATORS LTD0 citations52
US11293893B2Apr 5, 2022
Gas sensor and gas concentration measurement method
NGK INSULATORS LTD0 citations52
US11054381B2Jul 6, 2021
Gas sensor
NGK INSULATORS LTD0 citations52
US10969362B2Apr 6, 2021
Particular-gas concentration-measuring apparatus and particular-gas concentration measuring system
NGK INSULATORS LTD0 citations52
US11333055B2May 17, 2022
Catalyst deterioration diagnosis method and catalyst deterioration diagnosis system
NGK INSULATORS LTD0 citations51
US11060439B2Jul 13, 2021
Catalyst deterioration diagnosis system and catalyst deterioration diagnosis method
NGK INSULATORS LTD0 citations51
US10895189B2Jan 19, 2021
Catalyst deterioration diagnosis method and catalyst deterioration diagnosis system
NGK INSULATORS LTD0 citations51
US11668670B2Jun 6, 2023
Gas sensor
NGK INSULATORS LTD0 citations50
US11680926B2Jun 20, 2023
Gas sensor
NGK INSULATORS LTD0 citations49
US12461058B2Nov 4, 2025
Gas sensor and concentration measurement method using gas sensor
NGK INSULATORS LTD0 citations48
US9620805B2Apr 11, 2017
Solid oxide fuel cell
NGK INSULATORS LTD0 citations48
US10871465B2Dec 22, 2020
Gas sensor
NGK INSULATORS LTD0 citations42
US10859528B2Dec 8, 2020
Gas sensor
NGK INSULATORS LTD0 citations42
US9954232B2Apr 24, 2018
Fuel cell
NGK INSULATORS LTD0 citations42
US10876993B2Dec 29, 2020
Ammonia gas sensor and method for measuring concentration of ammonia gas
NGK INSULATORS LTD0 citations41
US10845327B2Nov 24, 2020
Gas sensor
NGK INSULATORS LTD0 citations41
US10845326B2Nov 24, 2020
Gas sensor and method of controlling gas sensor
NGK INSULATORS LTD0 citations41
US10816501B2Oct 27, 2020
Gas sensor and method for manufacturing gas sensor
NGK INSULATORS LTD0 citations41
US10816500B2Oct 27, 2020
Gas sensor, method for producing conductive paste, and method for manufacturing gas sensor
NGK INSULATORS LTD0 citations41
US10809224B2Oct 20, 2020
Gas sensor calibration method
NGK INSULATORS LTD0 citations41
US10788444B2Sep 29, 2020
Gas sensor
NGK INSULATORS LTD0 citations41
US10605763B2Mar 31, 2020
Method of reducing output degradation of gas sensor
NGK INSULATORS LTD0 citations41
US10551341B2Feb 4, 2020
Gas sensor
NGK INSULATORS LTD0 citations41
US10520466B2Dec 31, 2019
Gas sensor
NGK INSULATORS LTD0 citations41
US10514355B2Dec 24, 2019
Gas sensor
NGK INSULATORS LTD0 citations41
YOSHIDA TOSHIHIRO
1 patentOLYMPUS CORP
1 patentShowing the top 50 of 53 patents by PatentIndex Score.