Showing 1–3 of 3 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Masafumi Umekawa | Hodogaya Chemical Co. | 6 |
| 2 | Toshihiro Katano | Voith Patent Gmbh | 3 |
| 2 | Seizi Kawamata | Nihon Seikan Kabushiki Kaisha | 3 |
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 | Masafumi Umekawa | Hodogaya Chemical Co. | 6 |
| 2 | Toshihiro Katano | Voith Patent Gmbh | 3 |
| 2 | Seizi Kawamata | Nihon Seikan Kabushiki Kaisha | 3 |