Spark plug
US-12407148-B2 · Sep 2, 2025 · US
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Sumoyama Daisuke patents
Sumoyama Daisuke is listed as an inventor on 31 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Sumoyama Daisuke |
| Total patents | 31 |
| First publication | Nov 24, 2015 |
| Latest publication | Sep 2, 2025 |
Notable patents
Publications ranked by popularity score, then publication date.
Spark plug
US-2024291244-A1 · Aug 29, 2024 · US
Spark plug
US-10965104-B2 · Mar 30, 2021 · US
Spark plug
US-10958045-B2 · Mar 23, 2021 · US
Spark plug
US-2021036493-A1 · Feb 4, 2021 · US
Spark plug
US-2021036492-A1 · Feb 4, 2021 · US
Spark plug
US-10498110-B2 · Dec 3, 2019 · US
Spark plug and manufacturing method therefor
US-10447014-B1 · Oct 15, 2019 · US
Spark plug and manufacturing method therefor
US-2019296526-A1 · Sep 26, 2019 · US
Spark plug
US-2019288487-A1 · Sep 19, 2019 · US
Recent patents
Latest publications not already listed above.
Spark plug
US-10312669-B2 · Jun 4, 2019 · US
Electrode tip for spark plug, and spark plug
US-10186845-B2 · Jan 22, 2019 · US
Spark plug
US-2018366918-A1 · Dec 20, 2018 · US
Spark plug
US-10153621-B2 · Dec 11, 2018 · US
Spark plug
US-10033163-B1 · Jul 24, 2018 · US
Spark plug
US-9948069-B2 · Apr 17, 2018 · US
Spark plug
US-9948068-B2 · Apr 17, 2018 · US
Spark plug
US-9887519-B1 · Feb 6, 2018 · US
Spark plug
US-2018019581-A1 · Jan 18, 2018 · US
Spark plug
US-2018019580-A1 · Jan 18, 2018 · US
Spark plug
US-9853423-B1 · Dec 26, 2017 · US
Spark plug and method for producing the same
US-9705292-B2 · Jul 11, 2017 · US
Electrode tip for spark plug, and spark plug
US-2017187170-A1 · Jun 29, 2017 · US
Spark plug
US-9627857-B2 · Apr 18, 2017 · US
Spark plug and method for producing the same
US-2017063048-A1 · Mar 2, 2017 · US
Spark plug
US-2017054274-A1 · Feb 23, 2017 · US
Spark plug
US-2017033539-A1 · Feb 2, 2017 · US
Spark plug
US-9548593-B2 · Jan 17, 2017 · US
Spark plug
US-2016294164-A1 · Oct 6, 2016 · US
Spark plug
US-2016276811-A1 · Sep 22, 2016 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Ngk Spark Plug Co | 29 |
| Niterra Co Ltd | 2 |
Top CPC classifications
Most common classification codes across this inventor's patents.