Showing 1–7 of 7 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Takamitsu Igaue | Unicharm | 5 |
| 2 | Hisashi Takai | Unicharm | 4 |
| 2 | Tsutomu Kido | Unicharm | 4 |
| #4 | Mitsuo Nagano | Sankyo Holdings Co. | 1 |
| #4 | Masahiko Shikatani | Unicharm | 1 |
| #4 | Taiji Shimakawa | Unicharm | 1 |
| #4 | Hiroyuki Soga | Unicharm | 1 |