Showing 1–7 of 7 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Tetsuya Mitsumoto | Mitsui Mining & Smelting Co. | 2 |
| 1 | Hitohiko Ide | Mitsui Mining & Smelting Co. | 2 |
| 3 | Toshitaka Goto | Atom | 1 |
| 3 | Tsuneyoshi Kamada | Mitsui Mining & Smelting Co. | 1 |
| 3 | Yasuhiro Ochi | Mitsui Mining & Smelting Co. | 1 |
| 3 | Masashi Sakano | Mitsui Mining & Smelting Co. | 1 |
| 3 | Naoki Kumada | Mitsui Mining & Smelting Co. | 1 |