Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10968881 | Spark plug | Masaru Kano, Tomohiro Iwatsuka, Yoshiki Inoue, Keita Nakagawa | 2021-04-06 |
| 8432092 | Spark plug | — | 2013-04-30 |
| 7975665 | Spark plug and internal combustion engine provided with the same | — | 2011-07-12 |