Top Inventors at Mycoal Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Kenichi Iwamoto | 4 |
| 2 | Kaoru Usui | 3 |
| 3 | Michio Aida | 3 |
| #4 | Toshihiro Dodo | 3 |
| #5 | Yasumasa Usui | 3 |
| #6 | Yoshikazu Sakamaki | 3 |
| #7 | Takashi Morito | 2 |
| #8 | Yumiko Mine | 2 |
| #9 | Yukio Urume | 2 |
| #10 | Hisao Kimura | 1 |
| #11 | Masato Nakamura | 1 |