Showing 1–13 of 13 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Masahiro Itoh | Ricoh Company | 4 |
| 2 | Jiro Miyai | Sekisui Chemical Co. | 2 |
| 2 | Tadashi Marumoto | Sekisui Chemical Co. | 2 |
| 2 | Akira Okuno | Schott Japan | 2 |
| #5 | Daisuke Fukushima | Sumitomo Chemical | 1 |
| #5 | Chikao Shimizu | Sekisui Chemical Co. | 1 |
| #5 | Takashi Higuchi | Fujitsu Ten Limited | 1 |
| #5 | Masaaki Nakamura | Panasonic | 1 |
| #5 | Masayuki Yunoue | Hitachi Construction Machinery Tierra Co. | 1 |
| #5 | Hiroki Honda | Mitsubishi Electric | 1 |
| #5 | Yuji Hatanaka | Hitachi | 1 |
| #5 | Goro Katsuura | Shionogi & Co. | 1 |
| #5 | Yohei Otani | Yamaha | 1 |