Showing 1–7 of 7 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Toshihisa Hasegawa | Tottori University | 2 |
| 2 | Keiichi Katayama | Mitsubishi Mining | 1 |
| 2 | Masahiro Ozoe | — | 1 |
| 2 | Daiji Sakamoto | Hitachi | 1 |
| 2 | Yoshie Sakamoto | Fujisawa Pharmaceutical Co. | 1 |
| 2 | Akinori Oka | Otsuka Chemical Co. | 1 |
| 2 | Shigeru Ohtsuka | Sumitomo Electric Industries | 1 |