Showing 1–6 of 6 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Noboru Tsukamoto | Shinagawa Refractories Co. | 2 |
| 2 | Natsuko Waki | Minolta Co. | 1 |
| 2 | Motoharu Niki | Ntn | 1 |
| 2 | Masaru Terao | Shinagawa Refractories Co. | 1 |
| 2 | Tatsuo Katayama | Uchiyama Manufacturing | 1 |
| 2 | Akio Sasaki | Hitachi | 1 |