Showing 1–7 of 7 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Goro Kitsukawa | Hitachi | 7 |
| 2 | Haruo Yoda | Hitachi | 3 |
| 3 | Juji Ishigame | Sumitomo Metal Mining Co. | 1 |
| 3 | Toyoji Okuwaki | Hitachi | 1 |
| 3 | Yasuhiro Katoh | Hitachi | 1 |
| 3 | Kunizo Sahara | Hitachi | 1 |
| 3 | Hisatake Yokouchi | Hitachi Medical | 1 |