Showing 1–4 of 4 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Toshiki Shirahata | Hitachi Industrial Equipment Systems Co. | 2 |
| 2 | Tatsuhito Azegami | Hitachi Industrial Equipment Systems Co. | 1 |
| 2 | Tooru Honma | Hitachi Industrial Equipment Systems Co. | 1 |
| 2 | Junji Ono | Nsk | 1 |