Showing 1–5 of 5 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Yasutaka Tsuruga | Hitachi Construction Machinery Co. | 10 |
| 2 | Yasunori Miyamoto | Hitachi Construction Machinery Co. | 2 |
| 3 | Katsuyuki Kirita | Hitachi Construction Machinery Co. | 1 |
| 3 | Genroku Sugiyama | Hitachi Construction Machinery Co. | 1 |
| 3 | Masakazu Miyata | Riso Kagaku | 1 |