Showing 1–4 of 4 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Kazuhiko Mizoguchi | Hitachi Construction Machinery Co. | 6 |
| 2 | Takeo Manabe | Hitachi Construction Machinery Co. | 5 |
| 3 | Hidetoshi Satake | Hitachi Construction Machinery Co. | 2 |
| #4 | Yuji Ushiyama | Hitachi Chemical Company | 1 |