Showing 1–9 of 9 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Takashi Morohoshi | Nippon Steel | 5 |
| 2 | Takeji Tanaka | Mitsubishi Mining | 1 |
| 2 | Yoshimi Iwasaki | Kuroda Precision Industries | 1 |
| 2 | Shozo Nanba | Bmc Co. | 1 |
| 2 | Hidenori TORII | Idemitsu Kosan Co. | 1 |
| 2 | Shuichi Akashi | Toppan Printing Co. | 1 |
| 2 | Tomoaki Matsugi | Mitsui Chemicals | 1 |
| 2 | Tetsutaro Sato | — | 1 |
| 2 | Ryutaku Kaneyama | Unknown | 1 |