Showing 1–6 of 6 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Kazuo Otsuka | Seiko Epson | 4 |
| 2 | Reiko Sato | Fujitsu Telecom Networks Limited | 1 |
| 2 | Kazumasa Yokoyama | Green Cross | 1 |
| 2 | Isao Nomura | Mitsubishi Gas Chemical Company | 1 |
| 2 | Kanji Yoshida | Seiko Epson | 1 |
| 2 | Kazuo Shimizu | Kissei Pharmaceutical Co. | 1 |