Top Inventors at Hitachi Metal All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Atsushi Yamada | 1 |
| 2 | Hatsuo Tajima | 1 |
| 3 | Hiroyuki Fujii | 1 |
| #4 | Hiromi Kashiwagi | 1 |
| #5 | Hideshige Matsuo | 1 |
| #6 | Hirooh Tominaga | 1 |
| #7 | Isao Sakaguchi | 1 |
| #8 | Keitaro Yamashita | 1 |
| #9 | Masaaki Tanahashi | 1 |
| #10 | Masahiro Yoshimura | 1 |
| #11 | Nobuaki Hara | 1 |
| #12 | Nobuhiko Katagiri | 1 |
| #13 | Norikazu Koyuhara | 1 |
| #14 | Ryouji Iijima | 1 |
| #15 | Seiji Hirata | 1 |
| #16 | Takao Honda | 1 |
| #17 | Takashi Kitano | 1 |
| #18 | Toshihiko Tanaka | 1 |
| #19 | Tsuyoshi Watanabe | 1 |
| #20 | Youichi Yamamoto | 1 |
| #21 | Yukio Yoshimura | 1 |