Showing 1–10 of 10 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Keiji Sakamoto | Daiichi Fine Chemical Co. | 2 |
| 1 | Akira Shinagawa | Fuji Yakuhin Kogyo Kabushiki Kaisha | 2 |
| 3 | Kenji Yonezawa | Toyama Chemical Co. | 1 |
| 3 | Zenzo Hashizume | Kioritz | 1 |
| 3 | Kazuya Tsuzaki | Daiichi Fine Chemical Co. | 1 |
| 3 | Taro Kiyoto | Toyama Chemical Co. | 1 |
| 3 | Shinji Kita | — | 1 |
| 3 | Noboru Iwakami | Toyama Chemical Co. | 1 |
| 3 | Hiroshi Sumiya | Brother Kogyo | 1 |
| 3 | Fumio Takase | Kioritz | 1 |