Top Inventors at Okayama Prefecture All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Kenichi Ogawa | 14 |
| 2 | Chikara Ohto | 7 |
| 3 | Satoshi Kondo | 7 |
| #4 | Kenji Henmi | 4 |
| #5 | Norihiro Mitsukawa | 4 |
| #6 | Aya Iwasaki | 2 |
| #7 | Etsuko Hattori | 2 |
| #8 | Hisashi Ito | 2 |
| #9 | Hiroki Sugimoto | 2 |
| #10 | Iwao Furusawa | 2 |
| #11 | Nobuhiko Muramoto | 2 |
| #12 | Tomoko Tanaka | 2 |
| #13 | Yoshikazu Tanaka | 2 |
| #14 | Yukinori Nagatani | 2 |
| #15 | Etsuko Matsunaga | 1 |
| #16 | Humiki Kawai | 1 |
| #17 | Masayoshi Matsumoto | 1 |
| #18 | Masatoshi Ohishi | 1 |
| #19 | Madoka Yonekura | 1 |
| #20 | Naoki Negishi | 1 |
| #21 | Tomonori Shiraishi | 1 |
| #22 | Toshiaki Tanabe | 1 |
| #23 | Yasushi Tasaka | 1 |
| #24 | Akiyoshi Kawaoka | 1 |