Top Inventors at Keihin 2021
| Rank | Name | Patents |
|---|---|---|
| 1 | Shingo Akiyama | 3 |
| 2 | Shingo Tsuchiya | 2 |
| 3 | Atsushi Ogawa | 1 |
| #4 | Daisuke Hoshino | 1 |
| #5 | Hirohito Ide | 1 |
| #6 | Kazunari Kurokawa | 1 |
| #7 | Kazuyuki Ohta | 1 |
| #8 | Kazusa Sato | 1 |
| #9 | Kazutaka Senoo | 1 |
| #10 | Kazuya Sugano | 1 |
| #11 | Katsuhiro Takahashi | 1 |
| #12 | Kengo Nomura | 1 |
| #13 | Koji Suzuki | 1 |
| #14 | Kyo Kyo | 1 |
| #15 | Masaaki Ishizaki | 1 |
| #16 | Masayuki Suzuki | 1 |
| #17 | Masashi Ueda | 1 |
| #18 | Motoaki Kato | 1 |
| #19 | Satoshi Tanaka | 1 |
| #20 | Seiji Kamata | 1 |
| #21 | Shigeto Ryuen | 1 |
| #22 | Shinichi Yataka | 1 |
| #23 | Soichiro Nao | 1 |
| #24 | Tao Trong Bui | 1 |
| #25 | Takuma Kodato | 1 |
| #26 | Takashi Sugawara | 1 |
| #27 | Yasushi Hori | 1 |
| #28 | Yasuhiko Kondo | 1 |
| #29 | Yoshihiro Ito | 1 |
| #30 | Yuya OGANE | 1 |
| #31 | Yusaku Suzuki | 1 |