Showing 1–8 of 8 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Masakazu Hatanaka | Sumitomo Electric Industries | 3 |
| 2 | Teruyuki Katayama | Sumitomo Rubber Industries | 1 |
| 2 | Katsuya Kominami | Fuso Pharmaceutical Industries | 1 |
| 2 | Shigeatsu Asari | Sumitomo Electric Industries | 1 |
| 2 | Hideo Sugano | Fuji Oil Holdings | 1 |
| 2 | Katsuya Yamada | Sumitomo Electric Industries | 1 |
| 2 | Kikuo Yamashita | Koyo Seiko Co. | 1 |
| 2 | Kazuaki Ikeda | Sumitomo Electric Fine Polymer | 1 |