Top Inventors at Yamada Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Kotaro Yamada | 8 |
| 2 | Satoru Suwabe | 5 |
| 3 | Junji Yamada | 3 |
| #4 | Shigeru Murata | 3 |
| #5 | Nobuyuki Araki | 2 |
| #6 | Seiji Saita | 2 |
| #7 | Daisuke Iwai | 1 |
| #8 | Etsuyo Yamada | 1 |
| #9 | Itsushi Nagamoto | 1 |
| #10 | Kazumasa Yamada | 1 |
| #11 | Kikuo Ito | 1 |
| #12 | Minoru Murata | 1 |
| #13 | Tetsuya Tsunoda | 1 |
| #14 | Toyoo Yamada | 1 |
| #15 | Yoshihiro Yamada | 1 |
| #16 | Yukio Yamada | 1 |
| #17 | Gerard Heikens | 1 |