Top Inventors at Yajima Kogyo All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Hideaki Tobita | 2 |
| 2 | Kazuo Naruse | 2 |
| 3 | Nobuji Koda | 2 |
| #4 | Hitosi Asai | 1 |
| #5 | Masahiro Yoshimura | 1 |
| #6 | Nobuzi Koda | 1 |
| #7 | Shizuo Sagara | 1 |
| #8 | Shigeru Yajima | 1 |
| #9 | Takehito Tanabe | 1 |
| #10 | Taizo Yamaura | 1 |
| #11 | Tetsunori Tanaka | 1 |
| #12 | Yokichi Samizo | 1 |
| #13 | Yasuhiro Kanaishi | 1 |