Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11754032 | Ignition system | Yasuomi Imanaka, Ryo Tamura, Atsushi Iwami, Tatsuya Oka, Yuuta KAWASHIMA | 2023-09-12 |
| 11757261 | Ground electrode for spark plug and spark plug | Nobuo Abe, Naoto Hayashi | 2023-09-12 |
| 10637214 | Spark plug having a recess formed in an electrode | — | 2020-04-28 |
| 10559944 | Spark plug for internal combustion engine | Koji Yamanaka | 2020-02-11 |
| 10476238 | Spark plug for internal combustion engine | — | 2019-11-12 |