Showing 1–7 of 7 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Sizuo Yamaguchi | Citizen Watch Co. | 4 |
| 2 | Takamasa Mesaki | Satake Engineering Co. | 3 |
| 3 | Sekiji Yokota | Hayakawa Rubber Co. | 2 |
| #4 | Oda Isao | — | 1 |
| #4 | Fumihito Koshika | Fujitsu Limited | 1 |
| #4 | Fumio Ogawara | Mitsubishi Mining | 1 |
| #4 | Konoshin Tamura | Mitsubishi Mining | 1 |