Showing 1–9 of 9 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Kaoru Hishiki | Ohkuchi Materials Co. | 6 |
| 2 | Kotaro Tomeoka | Ohkuchi Materials Co. | 4 |
| 2 | Keiichi Otaki | Ohkuchi Materials Co. | 4 |
| #4 | Hirofumi TSUNEMATSU | Sumitomo Metal Mining Co. | 3 |
| #4 | Takeshi Chonan | Sumitomo Metal Mining Co. | 3 |
| #6 | Mika Okada | Sumitomo Metal Mining Co. | 2 |
| #7 | Ryouichi Yoshimoto | Ohkuchi Materials Co. | 1 |
| #7 | Yukihiro Koyama | Yazaki | 1 |
| #7 | Hideaki Fukuyama | Sumitomo Metal Mining Co. | 1 |