Showing 1–6 of 6 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Yoshinobu Nakagome | Hitachi | 5 |
| 2 | Mitsuo Kato | Mitsubishi Mining | 4 |
| 3 | Seiji Kashioka | Hitachi | 3 |
| 3 | Hideki Nakamura | Hitachi | 3 |
| #5 | Koichi Endo | Kabushiki Kaisha Toshiba | 2 |
| #6 | Takashi Kono | Olympus | 1 |
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