Showing 1–3 of 3 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Kenichi Arai | Olympus | 2 |
| 2 | Hisanori Aoyama | Ngk Spark Plug Co. | 1 |
| 2 | Yoshifumi TSUTAI | Ngk Spark Plug Co. | 1 |
4 patents · 3 inventors
Ranked #15,930 of 42,968 cities Top 40%
Showing 1–3 of 3 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Kenichi Arai | Olympus | 2 |
| 2 | Hisanori Aoyama | Ngk Spark Plug Co. | 1 |
| 2 | Yoshifumi TSUTAI | Ngk Spark Plug Co. | 1 |