Top Inventors at Osaka Transformer Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Hiroji Okada | 2 |
| 2 | Hiromu Yamagami | 2 |
| 3 | Kousuke Shiramizu | 2 |
| #4 | Hiroaki Okamoto | 1 |
| #5 | Hiroshi Takai | 1 |
| #6 | Hiroyuki Takeyama | 1 |
| #7 | Hideyuki Yamamoto | 1 |
| #8 | Kenji Sakakibara | 1 |
| #9 | Kouji Okuda | 1 |
| #10 | Moritoshi Nagasaka | 1 |
| #11 | Toshiyuki Okada | 1 |
| #12 | Waichi Nishikawa | 1 |
| #13 | Yoshiro Awano | 1 |
| #14 | Yoshirou Awano | 1 |
| #15 | Yoshihiro Hamakawa | 1 |