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 patentsUS6337533B1Jan 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 patentsUS11131008B2Sep 28, 2021
Heat-resistant Ir alloy
ISHIFUKU METAL IND4 citations69
US11486024B2Nov 1, 2022
Heat-resistant Ir alloy wire
ISHIFUKU METAL IND2 citations67
US11773473B2Oct 3, 2023
Heat-resistant IR alloy
ISHIFUKU METAL IND0 citations59
US11505848B2Nov 22, 2022
Heat-resistant Ir alloy
ISHIFUKU METAL IND0 citations57