Inventor
TANAKA KUNIHARU
JP34 patents
⚠️ This page may combine multiple inventors who share the name “TANAKA KUNIHARU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NGK SPARK PLUG CO
28 patentsUS6559579B2May 6, 2003
Alumina-based sintered body insulator for spark plugs
NGK SPARK PLUG CO40 citations92
US10090646B2Oct 2, 2018
Spark plug
NGK SPARK PLUG CO15 citations83
US9997894B2Jun 12, 2018
Spark plug having a resistor element
NGK SPARK PLUG CO4 citations72
US9595814B2Mar 14, 2017
Spark plug
NGK SPARK PLUG CO4 citations72
US9590395B2Mar 7, 2017
Spark plug
NGK SPARK PLUG CO3 citations72
US11183819B2Nov 23, 2021
Spark plug
NGK SPARK PLUG CO3 citations71
US10348061B2Jul 9, 2019
Spark plug
NGK SPARK PLUG CO4 citations71
US10586627B2Mar 10, 2020
Spark plug
NGK SPARK PLUG CO2 citations70
US10340667B2Jul 2, 2019
Spark plug
NGK SPARK PLUG CO2 citations70
US9912125B2Mar 6, 2018
Spark plug
NGK SPARK PLUG CO3 citations70
US9080964B2Jul 14, 2015
Gas sensor element and gas sensor
NGK SPARK PLUG CO6 citations69
US9160145B2Oct 13, 2015
Insulator for spark plug and spark plug
NGK SPARK PLUG CO2 citations62
US7638737B2Dec 29, 2009
Ceramic-metal assembly and ceramic heater
NGK SPARK PLUG CO3 citations61
US10193311B2Jan 29, 2019
Spark plug
NGK SPARK PLUG CO1 citations60
US9385511B2Jul 5, 2016
Spark plug
NGK SPARK PLUG CO1 citations52
US9373940B2Jun 21, 2016
Spark plug
NGK SPARK PLUG CO1 citations51
US9281662B2Mar 8, 2016
Spark plug
NGK SPARK PLUG CO0 citations51
US10153622B1Dec 11, 2018
Spark plug having the thickness of a magnetic member without excessively narrowing an electrode member
NGK SPARK PLUG CO1 citations49
US9653888B2May 16, 2017
Spark plug
NGK SPARK PLUG CO1 citations49
US9291525B2Mar 22, 2016
Gas sensor element and gas sensor
NGK SPARK PLUG CO0 citations49
US10305260B2May 28, 2019
Spark plug including an insulator with a front end portion having first and second sections
NGK SPARK PLUG CO0 citations47
US10751923B2Aug 25, 2020
Spark plug insulator production method, insulator, molding die
NGK SPARK PLUG CO0 citations41
US10277012B2Apr 30, 2019
Spark plug including a magnetic substance and a conductor disposed thereon
NGK SPARK PLUG CO0 citations40
US10270228B2Apr 23, 2019
Spark plug
NGK SPARK PLUG CO0 citations40
US10879675B2Dec 29, 2020
Spark plug
NGK SPARK PLUG CO0 citations39
US10424901B2Sep 24, 2019
Spark plug
NGK SPARK PLUG CO0 citations39
US9755404B2Sep 5, 2017
Spark plug
NGK SPARK PLUG CO0 citations39
US9234870B2Jan 12, 2016
Gas sensor element, and gas sensor
NGK SPARK PLUG CO0 citations39
KURONO HIROKAZU
4 patentsUS8564184B2Oct 22, 2013
Spark plug and process for producing spark plug
KURONO HIROKAZU4 citations61
US8278809B2Oct 2, 2012
Spark plug with alumina-based insulator
KURONO HIROKAZU2 citations61
US8093791B2Jan 10, 2012
Spark plug having particular insulator
KURONO HIROKAZU5 citations61
US8390183B2Mar 5, 2013
Spark plug and method for manufacturing spark plug
KURONO HIROKAZU3 citations59