Showing 1–7 of 7 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Yasutaka Tsuruga | Hitachi Construction Machinery Co. | 4 |
| 2 | Takashi Takeyama | Kcm | 3 |
| 2 | Fumihiko Matsuda | Nippon Mektron | 3 |
| 2 | Kazuo Ishida | Mitsubishi Electric | 3 |
| #5 | Hiroyuki Ebinuma | Sekisui Medical Co. | 1 |
| #5 | Keigo Kikuchi | Kcm | 1 |
| #5 | Kumiko Yuki | Sekisui Medical Co. | 1 |