Top Inventors at Oohiro Works All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Nobuyuki Minami | 32 |
| 2 | Hirohisa Shimizu | 17 |
| 3 | Kazuo Ooyama | 10 |
| #4 | Toshiaki Kawakami | 3 |
| #5 | Toshiyuki Sato | 3 |
| #6 | Hideaki Miyoshi | 2 |
| #7 | Tetsuji Hatanaka | 2 |
| #8 | Shigechika Kobayashi | 1 |
| #9 | Shigetsugu Ozaki | 1 |
| #10 | Tadashi Ijichi | 1 |
| #11 | Yasuke Hirota | 1 |
| #12 | Yoshikazu Ishimura | 1 |