Showing 1–5 of 5 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Kinya Oigawa | Sumitomo Metal Mining Co. | 2 |
| 2 | Hiyotaro Segawa | — | 1 |
| 2 | Seiki Takeda | — | 1 |
| 2 | Susumu Ojima | — | 1 |
| 2 | Hidefumi Yamauchi | Yamaha | 1 |
6 patents · 5 inventors
Ranked #64,531 of 111,555 cities Top 60%
Showing 1–5 of 5 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Kinya Oigawa | Sumitomo Metal Mining Co. | 2 |
| 2 | Hiyotaro Segawa | — | 1 |
| 2 | Seiki Takeda | — | 1 |
| 2 | Susumu Ojima | — | 1 |
| 2 | Hidefumi Yamauchi | Yamaha | 1 |