Showing 1–13 of 13 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Takatoshi Ishii | Ascii | 59 |
| 2 | Keiichi Higeta | Hitachi | 39 |
| 2 | Yoshitoshi Ito | Hitachi | 39 |
| #4 | Isamu Yuito | Hitachi | 34 |
| #5 | Kozaburo Kurita | Hitachi | 30 |
| #6 | Toshiro Hiramoto | Hitachi | 12 |
| #6 | Yasuhiro Fujimura | Hitachi | 12 |
| #8 | Yasuichi Hashimoto | Kabushiki Kaisha Toshiba | 9 |
| #9 | Toshikatsu Manabe | Hitachi | 8 |
| #10 | Yukihito Ishihara | Hitachi | 7 |
| #11 | Masanori Katsuyama | Hitachi | 5 |
| #11 | Harumasa Onozato | Hitachi Construction Machinery Co. | 5 |
| #13 | Tadashi Maehara | Bridgestone | 2 |
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