Top Inventors at Sen All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Shiro Ninomiya | 9 |
| 2 | Akihiro Ochi | 7 |
| 3 | Mitsuaki Kabasawa | 6 |
| #4 | Mitsukuni Tsukihara | 6 |
| #5 | Tetsuya Kudo | 5 |
| #6 | Takanori Yagita | 4 |
| #7 | Toshio Yumiyama | 4 |
| #8 | Yasuharu Okamoto | 3 |
| #9 | Genshu Fuse | 2 |
| #10 | Kazuhiro Watanabe | 2 |
| #11 | Masaki Ishikawa | 2 |
| #12 | Masateru Sato | 2 |
| #13 | Michiro Sugitani | 2 |
| #14 | Takeshi Kurose | 2 |
| #15 | Tatsuya Yamada | 2 |
| #16 | Yasuhiko Kimura | 2 |
| #17 | Yoshitaka Amano | 2 |
| #18 | Haruka Sasaki | 1 |
| #19 | Hitoshi Ando | 1 |
| #20 | Hisaki Izutani | 1 |
| #21 | Hiroyuki Kariya | 1 |
| #22 | Hiroshi Matsushita | 1 |
| #23 | Hiroki Murooka | 1 |
| #24 | Igal Ladabaum | 1 |
| #25 | Kouji Kato | 1 |
| #26 | Masashi Kuriyama | 1 |
| #27 | Masaru Tanaka | 1 |
| #28 | Takashi Kuroda | 1 |
| #29 | Tatsuo Nishihara | 1 |
| #30 | Yoshito Fujii | 1 |
| #31 | Yoshiaki Inda | 1 |
| #32 | Yuuji Takahashi | 1 |