Showing 1–7 of 7 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Yurimasa Zenitani | Mitsui Petrochemical Industries | 3 |
| 2 | Tatsuo Sako | Pegasus Sewing Machine Mfg. Co. | 2 |
| 3 | Tomoyuki Izumi | Hokuriku Seiyaku Co. | 1 |
| 3 | Shunji Ichikawa | Taki Chemical Co. | 1 |
| 3 | Takatoshi Itoh | Taki Chemical Co. | 1 |
| 3 | Masakazu Kitayama | Hokuriku Pharmaceutical Co. | 1 |
| 3 | Norio Tohma | Asahi Medical Co. | 1 |