Top Inventors at Mitani Valve Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Masato Suzuki | 7 |
| 2 | Osamu Takizawa | 6 |
| 3 | Yasuo Ohshima | 4 |
| #4 | Masaaki Seki | 3 |
| #5 | Hiroshi Kanno | 1 |
| #6 | Hideo Okada | 1 |
| #7 | Hideo Togashi | 1 |
| #8 | Kazuya Uesawa | 1 |
| #9 | Ryuichi Mizuguchi | 1 |
| #10 | Ryoichi Owada | 1 |
| #11 | Yasunori Ando | 1 |
| #12 | Yoshio Monden | 1 |
| #13 | Katsuhiko Kanoya | 1 |