Showing 1–5 of 5 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Takuma Houzyou | Nippon Carbide Industries Co. | 2 |
| 2 | Masaaki SUGIMURA | Sugino Machine Limited | 1 |
| 2 | Naoko YOSHIZAWA | — | 1 |
| 2 | Yukinobu Takata | Sugino Machine Limited | 1 |
| 2 | Yasuharu Okazaki | Hitachi Construction Machinery Co. | 1 |