Top Inventors at Dan Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Naomasa Ochi | 3 |
| 2 | Takahiro Wada | 3 |
| 3 | Ryosuke Mori | 2 |
| #4 | Sadao Kawamura | 2 |
| #5 | Kimio Takeda | 1 |
| #6 | Masaho Aoba | 1 |
| #7 | Takuya Fukitsuke | 1 |
| #8 | Teruo Takeuchi | 1 |
| #9 | Yushi Takeuchi | 1 |
| #10 | Zenkichi Kuriyama | 1 |
| #11 | Akira Ishii | 1 |
| #12 | Akira Isii | 1 |