Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5560046 | Lumbar support belt with suspenders and elastic sections having different elasticities | Yukio Iwamasa | 1996-10-01 |
| 5505356 | Detachable article holders | Yukio Iwamasa | 1996-04-09 |