Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7773373 | Vibration-damping structure for audio apparatus | Mamoru Sekiya, Norio Etoh, Norimasa Kitagawa | 2010-08-10 |
| 4850591 | Pneumatic operating device for game machine | Keisuke Takezawa, Masatsugu Kamimori, Takashi Kubozono | 1989-07-25 |