Top Inventors at Excell All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Tatsuya Nakagawa | 16 |
| 2 | Yasuo Ezaki | 12 |
| 3 | Shoji Shimizu | 3 |
| #4 | Takashi Tamura | 2 |
| #5 | Hiroo Kawano | 1 |
| #6 | Hiroshi Takakura | 1 |
| #7 | Katsunobu Nishida | 1 |
| #8 | Kuniharu Tobe | 1 |
| #9 | Masahiro Kimura | 1 |
| #10 | Nobumasa Tatara | 1 |
| #11 | Tatsuhiko Mukawa | 1 |
| #12 | Takahiro Onishi | 1 |
| #13 | Terumasa Yoneda | 1 |
| #14 | Thomas Rumler | 1 |
| #15 | Akihiko Suzuki | 1 |