P

Inventor

HANASHI KEN

JP26 patents
⚠️ This page may combine multiple inventors who share the name “HANASHI KEN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

DENSO CORP

17 patents
US6337533B1Jan 8, 2002

Spark plug for internal combustion engine and method for manufacturing same

DENSO CORP50 citations92
US6552476B1Apr 22, 2003

Spark plug for internal combustion engine having better self-cleaning function

DENSO CORP26 citations91
US7816846B2Oct 19, 2010

Spark plug with slant peripheral surface

DENSO CORP8 citations84
US10938186B2Mar 2, 2021

Spark plug electrode and spark plug

DENSO CORP2 citations72
US9929542B2Mar 27, 2018

Spark plug and method for manufacturing the same

DENSO CORP4 citations67
US8884504B2Nov 11, 2014

Spark plug for internal combustion engines and mounting structure for the spark plug

DENSO CORP2 citations63
US7893604B2Feb 22, 2011

Spark plug with stream shaper to shape tumble vortex into desired stream in combustion chamber

DENSO CORP4 citations63
US7808166B2Oct 5, 2010

Spark plug having improved configuration of ground electrode for ensuring high ignition capability

DENSO CORP2 citations63
US7768184B2Aug 3, 2010

Spark plug with stream shaper to shape tumble vortex into desired stream in combustion chamber

DENSO CORP6 citations63
US6956319B2Oct 18, 2005

Structure of spark plug designed to provide higher wear resistance to center electrode and production method thereof

DENSO CORP4 citations61
US9482203B2Nov 1, 2016

Spark plug for internal combustion engines and mounting structure for the spark plug

DENSO CORP1 citations51
US10050417B2Aug 14, 2018

Spark plug and manufacturing method thereof

DENSO CORP0 citations41
US9935429B2Apr 3, 2018

Ignition control system

DENSO CORP0 citations41
US9343875B2May 17, 2016

Spark plug for internal combustion engines and mounting structure for the spark plug

DENSO CORP0 citations41
US7541724B2Jun 2, 2009

Spark plug requiring low discharge voltage and having high self-cleaning capability

DENSO CORP0 citations41
US7221079B2May 22, 2007

Spark plug with a plurality of ground electrodes

DENSO CORP0 citations41
US10777974B2Sep 15, 2020

Spark plug for internal combustion engine that makes re-discharge less prone to occur

DENSO CORP0 citations40

ISHIFUKU METAL IND

4 patents

KANAO KEIJI

2 patents

HANASHI KEN

2 patents

KAWASHIMA YASUSHI

1 patent