Showing 1–12 of 12 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Hiroaki Sasashige | Mitsubishi Mining | 2 |
| 2 | Yukio Oku | Mitsubishi Mining | 1 |
| 2 | Tadeshi Hirakawa | Mitsubishi Mining | 1 |
| 2 | Shigeo Nawate | Mitsubishi Mining | 1 |
| 2 | Sumito Arima | Mitsubishi Mining | 1 |
| 2 | Sadaji Nishida | Mitsubishi Mining | 1 |
| 2 | Katsuhiko Morimoto | Mitsubishi Mining | 1 |
| 2 | Tochiaki Kusubayashi | Mitsubishi Mining | 1 |
| 2 | Kiyoshi Maruo | Teijin Limited | 1 |
| 2 | Noriyuki Hoshino | Mitsubishi Mining | 1 |
| 2 | Hiroyuki Moriga | Teijin Limited | 1 |
| 2 | Mikio Oohara | Teijin Limited | 1 |