Showing 1–3 of 3 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Shigeyuki Okumura | Sumitomo Electric Industries | 9 |
| 2 | Nishiguchi Kenji | Unknown | 2 |
| 3 | Ikuo Okubayashi | Idemitsu Petrochemical Co. | 1 |
12 patents · 3 inventors
Ranked #49,208 of 111,555 cities Top 45%
Showing 1–3 of 3 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Shigeyuki Okumura | Sumitomo Electric Industries | 9 |
| 2 | Nishiguchi Kenji | Unknown | 2 |
| 3 | Ikuo Okubayashi | Idemitsu Petrochemical Co. | 1 |