Showing 1–17 of 17 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Kazuyuki Kawasaki | Yoshitomi Pharmaceutical Industries | 8 |
| 2 | Koreyoshi Suenobu | Yoshitomi Pharmaceutical Industries | 4 |
| 2 | Hiroyuki Sueoka | Yoshitomi Pharmaceutical Industries | 4 |
| #4 | Shigeru Aso | Toto | 3 |
| #4 | Masato Seguchi | Yoshino Kogyosho Co. | 3 |
| #6 | Masayoshi Harada | Kabushiki Kaisha Toshiba | 2 |
| #6 | Moriyoshi Kudoh | Mitsubishi Chemical | 2 |
| #8 | Yasuhiko Kinoshita | — | 1 |
| #8 | Takanori Nishihata | Nippon Steel Chemical Co. | 1 |
| #8 | Misao Morinaga | Otsuka Chemical Co. | 1 |
| #8 | Isamu Sako | Yoshino Kogyosho Co. | 1 |
| #8 | Hiroyuki Hisama | Yoshino Kogyosho Co. | 1 |
| #8 | Jyoji Sato | Yoshino Kogyosho Co. | 1 |
| #8 | Masatsuki Matsumoto | — | 1 |
| #8 | Hirofumi Hansei | Kabushiki Kaisha Toshiba | 1 |
| #8 | Hironari Kotsubo | Kabushiki Kaisha Toshiba | 1 |
| #8 | Tsukasa Yamasaki | — | 1 |