Showing 1–6 of 6 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Ryoichi Ohkura | S.E.S. Co. | 4 |
| 2 | Isao Funyuu | Hitachi | 2 |
| 3 | Mituo Yamasaki | Hitachi Chemical Company | 1 |
| 3 | Masahiro Shimokawa | Hitachi | 1 |
| 3 | Nobuaki Ono | Ricoh Company | 1 |
| 3 | Yutaka Takashina | Nippon Soda Co. | 1 |