Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7780616 | Walking assistance device | Hisashi Katoh, Takashi Hirata, Taiji Koyama, Takako Fujii, Yoshirou Koyama | 2010-08-24 |
| D506165 | Wheelchair for athletics | Kyoichi Yokouchi | 2005-06-14 |