Showing 1–13 of 13 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Shoji Ikuhara | Hitachi | 9 |
| 2 | Ken Yoshioka | Hitachi | 7 |
| 3 | Saburou Kanai | Hitachi | 3 |
| #4 | Ikuo Yoshida | Hitachi | 2 |
| #4 | Tadahiro Izu | Nippon Steel | 2 |
| #6 | Kiyomi Horikoshi | Nippon Steel | 1 |
| #6 | Saburo Kanai | Hitachi | 1 |
| #6 | Junichi Tamenari | Nippon Steel | 1 |
| #6 | Mitsuru Nakayama | Nippon Steel | 1 |
| #6 | Hideo Takai | Hitachi | 1 |
| #6 | Yutaka Ohmoto | Hitachi | 1 |
| #6 | Ryouji Hamasaki | Hitachi | 1 |
| #6 | Yoshifumi Ogawa | Hitachi | 1 |