Inventor
NAKAGAKI KUNIHIKO
JP36 patents
⚠️ This page may combine multiple inventors who share the name “NAKAGAKI KUNIHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NGK INSULATORS LTD
31 patentsUS5672811ASep 30, 1997
Method of measuring a gas component and sensing device for measuring the gas component
NGK INSULATORS LTD139 citations99
US6355152B1Mar 12, 2002
Gas sensor and nitrogen oxide sensor
NGK INSULATORS LTD43 citations96
US6076393AJun 20, 2000
Method of measuring a gas component and sensing device for measuring the gas component
NGK INSULATORS LTD34 citations96
US5866799AFeb 2, 1999
Method of measuring a gas component and sensing device for measuring the gas component
NGK INSULATORS LTD62 citations96
US6419818B2Jul 16, 2002
NOx concentration-measuring method
NGK INSULATORS LTD15 citations93
US6344119B2Feb 5, 2002
Gas sensor
NGK INSULATORS LTD25 citations93
US6280588B1Aug 28, 2001
NOx-decomposing electrode and NOx concentration-measuring apparatus
NGK INSULATORS LTD27 citations93
US6196053B1Mar 6, 2001
Method of measuring a gas component and sensing device for measuring the gas component
NGK INSULATORS LTD28 citations93
US6045673AApr 4, 2000
Gas sensor
NGK INSULATORS LTD27 citations93
US5997707ADec 7, 1999
Oxide sensor
NGK INSULATORS LTD21 citations93
US5942190AAug 24, 1999
Oxide sensor
NGK INSULATORS LTD38 citations93
US5939615AAug 17, 1999
Method of measuring a gas component and sensing device for measuring the gas component
NGK INSULATORS LTD22 citations93
US5902469AMay 11, 1999
Gas sensor
NGK INSULATORS LTD29 citations93
US7445700B2Nov 4, 2008
Gas sensor and nitrogen oxide sensor
NGK INSULATORS LTD9 citations84
US6689266B2Feb 10, 2004
NOx concentration-measuring apparatus
NGK INSULATORS LTD14 citations84
US7153402B2Dec 26, 2006
NOx-decomposing electrode and NOx concentration-measuring apparatus
NGK INSULATORS LTD7 citations74
US6770181B2Aug 3, 2004
Gas sensor and nitrogen oxide sensor
NGK INSULATORS LTD6 citations74
US6527929B2Mar 4, 2003
Gas sensor and nitrogen oxide sensor
NGK INSULATORS LTD11 citations74
US6156175ADec 5, 2000
Method for producing electrochemical element and electrochemical element
NGK INSULATORS LTD11 citations74
US11249045B2Feb 15, 2022
Gas sensor, and method for measuring concentrations of plurality of target components in gas to be measured
NGK INSULATORS LTD2 citations73
US7156966B2Jan 2, 2007
Nox-decomposing electrode and NOx concentration-measuring apparatus
NGK INSULATORS LTD6 citations63
US12253488B2Mar 18, 2025
Gas sensor
NGK INSULATORS LTD0 citations62
US11125719B2Sep 21, 2021
Gas sensor
NGK INSULATORS LTD1 citations62
US11378543B2Jul 5, 2022
Gas sensor and sensor element
NGK INSULATORS LTD0 citations52
US11293894B2Apr 5, 2022
Gas sensor and method of producing gas sensor
NGK INSULATORS LTD0 citations52
US11054381B2Jul 6, 2021
Gas sensor
NGK INSULATORS LTD0 citations52
US7947159B2May 24, 2011
NOx-decomposing electrode and method for producing NOx sensor
NGK INSULATORS LTD0 citations52
US7943024B2May 17, 2011
Porous electrode and process of producing the same
NGK INSULATORS LTD1 citations52
US11060996B2Jul 13, 2021
Gas sensor, and method for measuring concentrations of plurality of target components in gas to be measured
NGK INSULATORS LTD0 citations51
US10830119B2Nov 10, 2020
Exhaust gas purification system and exhaust gas purification method
NGK INSULATORS LTD0 citations42
US7527718B2May 5, 2009
Method of treating gas sensor element
NGK INSULATORS LTD0 citations42