Showing 1–8 of 8 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Ryoichi Hashimoto | Kao | 15 |
| 2 | Naoki Kamikawa | Denso | 5 |
| 2 | Norio Saeki | Sumitomo Electric Industries | 5 |
| #4 | Shigeru Sanada | Arch Development | 3 |
| #5 | Tetsuji Kitou | Kao | 1 |
| #5 | Motoyoshi Maetani | Noritsu Koki Co. | 1 |
| #5 | Ryouichi HASHIMOTO | Kao | 1 |
| #5 | Kozo Sedimoto | Ace Denken Co. | 1 |