Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11981259 | Sound generation device for vehicle | Seisuke Mitsunaga, Hidekazu Shiraishi, Katsuya Shimizu, Ryuichi Yamada, Chieko Nakagami | 2024-05-14 |
| 11763795 | Vehicle sound generation device | Shuhei Otsuki, Ryuichi Yamada, Takatoshi Nomura | 2023-09-19 |