Top Inventors at Johnan Manufacturing All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Hiroki Shimizu | 5 |
| 2 | Hideaki Takehara | 5 |
| 3 | Masakane Yoshizawa | 4 |
| #4 | Hideo KASHIWABARA | 3 |
| #5 | Hideaki Kashiwagi | 3 |
| #6 | Wataru Murata | 3 |
| #7 | Yukihide Yamazaki | 3 |
| #8 | Junichi Yamamaru | 2 |
| #9 | Koji Sasaki | 2 |
| #10 | Manabu Shimomura | 2 |
| #11 | Naoki Baba | 2 |
| #12 | Naoki Ide | 2 |
| #13 | Seiichi Miyamoto | 2 |
| #14 | Shun SAKURAI | 2 |
| #15 | Tomotaka SHIROMA | 2 |
| #16 | Tsuyoshi Kondo | 2 |
| #17 | Harumitsu Nakamura | 1 |
| #18 | Hakurei Watanabe | 1 |
| #19 | Junichi Busujima | 1 |
| #20 | Junichi Kubota | 1 |
| #21 | Mayu Kobayashi | 1 |
| #22 | Shugo TANAKA | 1 |
| #23 | Syugo Tanaka | 1 |
| #24 | Takeshi Miyagawa | 1 |
| #25 | Takeshi Nishizawa | 1 |
| #26 | Takashi Ogawa | 1 |
| #27 | Takashi Takizawa | 1 |
| #28 | Tetsuya Kubota | 1 |
| #29 | Tomohiro Moriyama | 1 |
| #30 | Yasuhiro Saito | 1 |
| #31 | Yasushi Yoshida | 1 |
| #32 | Yuka Koike | 1 |
| #33 | Yuta SAKURAI | 1 |
| #34 | Yusuke Yamazaki | 1 |