Showing 1–18 of 18 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Genroku Sugiyama | Hitachi Construction Machinery Co. | 4 |
| 2 | Kazuo Ishida | Mitsubishi Electric | 3 |
| 2 | Masami Yoshida | Smc | 3 |
| 2 | Yutaka Koizumi | National Institute For Materials Science | 3 |
| 2 | Hirotaka Takeshima | Hitachi Medical | 3 |
| #6 | Osamu Miyazaki | Hitachi Medical | 2 |
| #6 | Hiroaki Yada | Sony | 2 |
| #8 | Masakazu Miyata | Riso Kagaku | 1 |
| #8 | Masanori Komuro | National Institute Of Advanced Industrial Science And Technology | 1 |
| #8 | Yasutaka Tsuruga | Hitachi Construction Machinery Co. | 1 |
| #8 | Yuriko Taniguchi | Daiichi Pure Chemicals Co. | 1 |
| #8 | Mitsuaki Yamamoto | Sekisui Medical Co. | 1 |
| #8 | Takashi Sugata | Tcm | 1 |
| #8 | Ikuo Noguchi | Riso Kagaku | 1 |
| #8 | Nobuo Masano | Hitachi Construction Machinery Co. | 1 |
| #8 | Takayuki Ban | Toyota | 1 |
| #8 | Isamu Fukamachi | Sekisui Medical Co. | 1 |
| #8 | Yoshiharu Yamanishi | Eisai | 1 |