Showing 1–7 of 7 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Tetsuo Watanabe | Ricoh Company | 6 |
| 2 | Takuma Minemura | Toyota | 3 |
| 3 | Naoyuki Morimoto | Sekisui Chemical Co. | 2 |
| 3 | Toshitaka Yoshitake | Sekisui Chemical Co. | 2 |
| #5 | Kenichi Shiina | — | 1 |
| #5 | Nobuto Kamiya | Sekisui Chemical Co. | 1 |
| #5 | Mitsuhiro Maeda | — | 1 |