Top Inventors at Denken Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Masaki Usui | 4 |
| 2 | Kazuhiro Watanabe | 3 |
| 3 | Mamoru Aihara | 3 |
| #4 | Manabu Takahashi | 3 |
| #5 | Toshio Shimizu | 3 |
| #6 | Yasuharu Hakamatsuka | 3 |
| Rank | Name | Patents |
|---|---|---|
| 1 | Masaki Usui | 4 |
| 2 | Kazuhiro Watanabe | 3 |
| 3 | Mamoru Aihara | 3 |
| #4 | Manabu Takahashi | 3 |
| #5 | Toshio Shimizu | 3 |
| #6 | Yasuharu Hakamatsuka | 3 |