Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12407148 | Spark plug | Kaito Nakamura, Daisuke Sumoyama, Takaaki Kikai | 2025-09-02 |
| 12308619 | Noble metal tip for spark plug, electrode for spark plug, and spark plug | Osamu Yoshimoto, Tomoo Tanaka | 2025-05-20 |
| 11616346 | Spark plug | Kazuki ITO, Hiroaki Izawa | 2023-03-28 |