Inventor
Ken Hanashi
Inventor
Handa, JP
Overview
Patents· 23 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Tprimary
H01TSpark gaps79%
F02PIgnition, other than compression ignition, for internal-combustion engines11%
C22CAlloys7%
B23KSoldering or unsoldering4%
PatentTitleYear
11,131,008Heat-resistant Ir alloy202110,938,186Spark plug electrode and spark plug202110,777,974Spark plug for internal combustion engine that makes re-discharge less prone to occur202010,050,417Spark plug and manufacturing method thereof20189,935,429Ignition control system20189,929,542'Spark plug and method for manufacturing the same'20189,482,203'Spark plug for internal combustion engines and mounting structure for the spark plug'20169,343,875'Spark plug for internal combustion engines and mounting structure for the spark plug'20168,884,504'Spark plug for internal combustion engines and mounting structure for the spark plug'20148,760,045'Spark plug for internal combustion engines and method for manufacturing the spark plug'20148,523,624'Spark plug for internal combustion engine and manufacturing method thereof'20138,398,447'Method for manufacturing spark plug for internal-combustion engine'20138,339,021'Spark plug for internal-combustion engine and method for manufacturing the same'20128,258,686'Spark plug for internal combustion engine'20127,893,604'Spark plug with stream shaper to shape tumble vortex into desired stream in combustion chamber'20117,816,846'Spark plug with slant peripheral surface'20107,808,166'Spark plug having improved configuration of ground electrode for ensuring high ignition capability'20107,768,184'Spark plug with stream shaper to shape tumble vortex into desired stream in combustion chamber'20107,541,724'Spark plug requiring low discharge voltage and having high self-cleaning capability'20097,221,079'Spark plug with a plurality of ground electrodes'20076,956,319'Structure of spark plug designed to provide higher wear resistance to center electrode and production method thereof'20056,552,476'Spark plug for internal combustion engine having better self-cleaning function'20036,337,533'Spark plug for internal combustion engine and method for manufacturing same'2002Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2002–2021Patents assigned to DENSO CORP (23)· patent assignee history
2002–2003Based in Nagoya, JP· patent location history
2009–2011Patents assigned to NIPPON SOKEN (5)· patent assignee history
2009–2014Based in Handa, JP· patent location history
2012–2014Patents assigned to HANASHI KEN (5)· patent assignee history
2012–2013Patents assigned to TSUBOTA KENKA (4)· patent assignee history
2012–2013Patents assigned to AIDA HIROTAKA (2)· patent assignee history
2014Based in Oobu, JP· patent location history
2016Based in Obu, JP· patent location history
2018–2021Based in Kariya, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DENSO CORP | 23 | 2002–2021 |
| HANASHI KENself | 5 | 2012–2014 |
| NIPPON SOKEN | 5 | 2009–2011 |
| TSUBOTA KENKA | 4 | 2012–2013 |
| AIDA HIROTAKA | 2 | 2012–2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Handa, JP | 10 | 2009–2014 |
| Kariya, JP | 6 | 2018–2021 |
| Obu, JP | 2 | 2016 |
| Nagoya, JP | 2 | 2002–2003 |
| Oobu, JP | 1 | 2014 |