P

Inventor

HONDA TOSHITAKA

JP55 patents
⚠️ This page may combine multiple inventors who share the name “HONDA TOSHITAKA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NGK SPARK PLUG CO

31 patents
US6160342ADec 12, 2000

Resistor-incorporated spark plug and manufacturing method of resistor-incorporated spark plug

NGK SPARK PLUG CO72 citations96
US6583537B1Jun 24, 2003

Spark plug with built-in resistor

NGK SPARK PLUG CO32 citations93
US6566793B2May 20, 2003

Spark plug

NGK SPARK PLUG CO30 citations93
US6334800B1Jan 1, 2002

Manufacturing method of resistor-incorporated spark plug

NGK SPARK PLUG CO29 citations93
US10090646B2Oct 2, 2018

Spark plug

NGK SPARK PLUG CO15 citations83
US7808250B2Oct 5, 2010

Test method and apparatus for spark plug insulator

NGK SPARK PLUG CO7 citations74
US9595814B2Mar 14, 2017

Spark plug

NGK SPARK PLUG CO4 citations72
US9590395B2Mar 7, 2017

Spark plug

NGK SPARK PLUG CO3 citations72
US9912125B2Mar 6, 2018

Spark plug

NGK SPARK PLUG CO3 citations70
US9614354B2Apr 4, 2017

Spark plug

NGK SPARK PLUG CO3 citations70
US9362722B2Jun 7, 2016

Spark plug with improved withstand voltage characteristics and high mechanical strength at high temperatures

NGK SPARK PLUG CO3 citations66
US8013617B2Sep 6, 2011

Test method and apparatus for spark plug ceramic insulator

NGK SPARK PLUG CO4 citations63
US7402941B2Jul 22, 2008

Spark plug

NGK SPARK PLUG CO3 citations63
US7365480B2Apr 29, 2008

Spark plug

NGK SPARK PLUG CO6 citations63
US6744189B2Jun 1, 2004

Spark plug

NGK SPARK PLUG CO5 citations63
US10637212B2Apr 28, 2020

Method for manufacturing insulator for spark plug

NGK SPARK PLUG CO1 citations62
US9160145B2Oct 13, 2015

Insulator for spark plug and spark plug

NGK SPARK PLUG CO2 citations62
US7710006B2May 4, 2010

Spark plug

NGK SPARK PLUG CO5 citations62
US7906893B2Mar 15, 2011

Spark plug of internal combustion engine having glaze layers on the spark plug

NGK SPARK PLUG CO2 citations61
US8970098B1Mar 3, 2015

Ignition plug

NGK SPARK PLUG CO3 citations60
US9385511B2Jul 5, 2016

Spark plug

NGK SPARK PLUG CO1 citations52
US7938706B2May 10, 2011

Deflection inspecting device for spark plug insulator, deflection inspecting method for spark plug insulator, and manufacturing method for spark plug insulator

NGK SPARK PLUG CO0 citations52
US9373940B2Jun 21, 2016

Spark plug

NGK SPARK PLUG CO1 citations51
US9281662B2Mar 8, 2016

Spark plug

NGK SPARK PLUG CO0 citations51
US9912126B2Mar 6, 2018

Spark plug insulator containing mullite and spark plug including same

NGK SPARK PLUG CO1 citations47
US9160144B2Oct 13, 2015

Spark plug with internal resistor having Ti and Zr components

NGK SPARK PLUG CO0 citations42
US10751923B2Aug 25, 2020

Spark plug insulator production method, insulator, molding die

NGK SPARK PLUG CO0 citations41
US9466951B2Oct 11, 2016

Spark plug

NGK SPARK PLUG CO0 citations41
US9711951B2Jul 18, 2017

Spark plug

NGK SPARK PLUG CO0 citations39
US9425585B2Aug 23, 2016

Insulator and spark plug

NGK SPARK PLUG CO0 citations39
US8928214B2Jan 6, 2015

Ignition plug

NGK SPARK PLUG CO0 citations39

KURONO HIROKAZU

5 patents
US8564184B2Oct 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
US9077157B2Jul 7, 2015

Ignition plug having a rear trunk portion that provides sufficient strength

KURONO HIROKAZU0 citations41

YOSHIDA HARUKI

4 patents
US9160147B2Oct 13, 2015

Spark plug and manufacturing method for same

YOSHIDA HARUKI0 citations45
US8770777B2Jul 8, 2014

Spark plug

YOSHIDA HARUKI0 citations41
US8710725B2Apr 29, 2014

Spark plug

YOSHIDA HARUKI0 citations41
US8653725B2Feb 18, 2014

Spark plug for internal-combustion engine

YOSHIDA HARUKI0 citations41

KURIBAYASHI MAKOTO

3 patents
US8183754B2May 22, 2012

Alumina-based sintered body for spark plug and method of manufacturing the same, and spark plug and method of manufacturing the same

KURIBAYASHI MAKOTO8 citations81
US8242672B2Aug 14, 2012

Spark plug having a fixation assisting member for the insulator

KURIBAYASHI MAKOTO3 citations59
US8539921B2Sep 24, 2013

Spark plug

KURIBAYASHI MAKOTO0 citations39

SUZUKI AKIRA

2 patents
US8395307B2Mar 12, 2013

Spark plug for preventing accumulation of carbon on an insulator

SUZUKI AKIRA3 citations63
US8564183B2Oct 22, 2013

Spark plug and method for manufacturing spark plug

SUZUKI AKIRA1 citations52

TAKAOKA KATSUYA

1 patent
US8482187B2Jul 9, 2013

Spark plug and process for producing spark plug

TAKAOKA KATSUYA4 citations58

UEGAKI HIRONORI

1 patent
US8550865B2Oct 8, 2013

Spark plug manufacturing method

UEGAKI HIRONORI2 citations56

HIROSE KAZUMICHI

1 patent
US8672722B2Mar 18, 2014

Spark plug manufacturing method

HIROSE KAZUMICHI2 citations51

HONDA TOSHITAKA

1 patent
US8148883B2Apr 3, 2012

Spark plug used for an internal-combustion engine and a method for manufacturing the same

HONDA TOSHITAKA3 citations51

FUKUSHIMA HOJU

1 patent
US9093824B2Jul 28, 2015

Spark plug

FUKUSHIMA HOJU0 citations39

Showing the top 50 of 55 patents by PatentIndex Score.