Top Inventors at Otax Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Kazuo Aoki | 4 |
| 2 | Mitsuru Kainuma | 3 |
| 3 | Naoki Hiyama | 3 |
| #4 | Tadahiro Ohkura | 3 |
| #5 | Toshiyuki Yoshida | 3 |
| #6 | Hiroshi Narita | 2 |
| #7 | Hiroshi Abe | 1 |
| #8 | Hiroaki Aoto | 1 |
| #9 | Hiroshi Iwamiya | 1 |
| #10 | Hidenori Muramatsu | 1 |
| #11 | Kazuto Ushiyama | 1 |
| #12 | Katsumi Yamaguchi | 1 |
| #13 | Mituru Kainuma | 1 |
| #14 | Sentaro Motohashi | 1 |
| #15 | Young Ho Choi | 1 |