Top Inventors at Riverfield All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Kotaro Tadano | 9 |
| 2 | Koki SHINDO | 7 |
| 3 | Daisuke Haraguchi | 5 |
| #4 | Yasushi Tanaka | 4 |
| #5 | Masao Kanazawa | 3 |
| #6 | Masataka Suzuki | 3 |
| #7 | Naoya Morita | 3 |
| #8 | Satoshi Kano | 2 |
| #9 | Yuki FURUSAWA | 2 |
| #10 | Hironobu Kawano | 1 |
| #11 | Hiroki Ujiie | 1 |
| #12 | Koki Aizawa | 1 |
| #13 | Kyohei TAKIKAWA | 1 |
| #14 | Noriaki Kanazawa | 1 |
| #15 | Nobuhisa Saitoh | 1 |
| #16 | Nobuaki Yamamoto | 1 |
| #17 | Takahiro Kanno | 1 |
| #18 | Teruyuki NISHIHARA | 1 |
| #19 | Yoshihiro Ishikawa | 1 |