Showing 1–28 of 28 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Nobuyuki Osawa | Nippon Seiko Co. | 5 |
| 2 | Katsuhiro Sasaki | Hitachi Construction Machinery Co. | 2 |
| 3 | Akira Nakata | Mitsubishi Electric | 1 |
| 3 | Kousuke Noda | Hitachi | 1 |
| 3 | Atsushi Ichikawa | Hitachi | 1 |
| 3 | Keizo Saito | Lube Co. | 1 |
| 3 | Mieko Ishii | Hitachi | 1 |
| 3 | Shinichi Nishiyama | Hitachi | 1 |
| 3 | Toru Nakajima | Hitachi Construction Machinery Co. | 1 |
| 3 | Hayato Kubota | Fuji Oil Holdings | 1 |
| 3 | Shigetaka Nakamura | Noritsu Koki Co. | 1 |
| 3 | Michio Takuma | Texas Instruments | 1 |
| 3 | Katsuaki Kikuchi | Hitachi | 1 |
| 3 | Akio Hoshi | Canon | 1 |
| 3 | Masaaki Kanayama | — | 1 |
| 3 | Eiichiro Nishihara | — | 1 |
| 3 | Kiyoshi Oizumi | Hitachi Cable | 1 |
| 3 | Yujiro Fujikawa | — | 1 |
| 3 | Tatsuaki Inomata | — | 1 |
| 3 | Koichi Yamato | Hitachi | 1 |
| 3 | Norichika Hamaguchi | — | 1 |
| 3 | Shigenobu Ohashi | Hitachi | 1 |
| 3 | Sakae Takeda | Hitachi Construction Machinery Co. | 1 |
| 3 | Tamio Innami | Hitachi | 1 |
| 3 | Michihiro Watanabe | Hitachi | 1 |
| 3 | Takehiko Yanagida | Hitachi | 1 |
| 3 | Kyoji Kaeriyama | Agency Of Industrial Science And Technology | 1 |
| 3 | Kuniaki Yoshida | Hitachi Construction Machinery Co. | 1 |