Showing 1–6 of 6 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Hajime Matsumoto | Toybox | 4 |
| 2 | Jun Sasahara | Honda Motor Co. | 2 |
| 3 | Kazuhisa Hatakeyama | Mitsubishi Chemical | 1 |
| 3 | Koji Fukamizu | Mitsubishi Chemical | 1 |
| 3 | Takaaki Hatori | Sekisui Plastics Co. | 1 |
| 3 | Atsushi Watarai | Mitsubishi Chemical | 1 |