Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10186845 | Electrode tip for spark plug, and spark plug | Daisuke Sumoyama, Tatsuya Gozawa, Yusuke KAWASHIMA | 2019-01-22 |
| 9887518 | Spark plug | — | 2018-02-06 |
| 9325156 | Spark plug | Kenji Ban, Yoshikazu Kataoka, Tomoaki Kato | 2016-04-26 |