Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5338099 | Shell structure for use with a chair having synchronously moving seat and seat back | Toru Nagao, Harumatsu Sato | 1994-08-16 |
| D348571 | Chair | Hironaga Obata, Tetsuya Kano, Toru Nagao | 1994-07-12 |
| 5314240 | Shell structure for use with a chair having synchronously moving seat and seat back | Toru Nagao, Harumatsu Sato | 1994-05-24 |
| D346909 | Chair | Hironaga Obata, Tetsuya Kano, Toru Nagao | 1994-05-17 |
| 5238294 | Interlocking mechanism for supporting seat and seat back of chair | Toru Nagao, Hironaga Obata, Yasuo Uematsu, Tetsuya Kano | 1993-08-24 |