Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12009639 | Spark plug | Takashi Sekizawa, Yuya Ono, Yuki Toumatsu, Yudai Kawaguchi, Kazuyoshi Torii | 2024-06-11 |
| 10804682 | Spark plug | Takashi Sekizawa, Yasushi Sakakura | 2020-10-13 |
| 9306374 | Spark plug | Katsutoshi Nakayama, Tatsunori Yamada | 2016-04-05 |
| 9246313 | Ignition system | Kenji Ban, Tatsunori Yamada, Katsutoshi Nakayama | 2016-01-26 |
| 9124075 | Ignition system | Tatsunori Yamada, Kenji Ban | 2015-09-01 |
| 8928212 | Spark plug | Kenji Ban, Tatsunori Yamada, Katsutoshi Nakayama | 2015-01-06 |