Top Inventors at Dkk-Toa All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Emiko Kaneko | 1 |
| 2 | Junichi Isoe | 1 |
| 3 | Kenichi Noda | 1 |
| #4 | Masao Mizuno | 1 |
| #5 | Makoto Saito | 1 |
| #6 | Makoto Satoda | 1 |
| #7 | Ryozo Goto | 1 |
| #8 | Satoshi Arakawa | 1 |
| #9 | Satoshi Takizawa | 1 |
| #10 | Satoshi Yawata | 1 |
| #11 | Setsuko Kamada | 1 |
| #12 | Shinichi Akazawa | 1 |
| #13 | Shintarou MORI | 1 |
| #14 | Shuji Sugawara | 1 |
| #15 | Tetsuya Sato | 1 |
| #16 | Yuko Konno | 1 |
| #17 | Yukimasa Shimura | 1 |
| #18 | Ai Shimomura | 1 |