Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6516494 | Adjustable door hinge | Yusho Nakamoto, Katsunori Sako | 2003-02-11 |
| 6405490 | Double hinged door system | Yusho Nakamoto, Katsunori Sako | 2002-06-18 |
| 6308476 | Adjustable frame | Yusho Nakamoto, Katsunori Sako | 2001-10-30 |
| 6167663 | Adjustable Frame | Yusho Nakamoto, Katsunori Sako | 2001-01-02 |