Top Inventors at Lac Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Tadashi Kaiba | 4 |
| 2 | Shuusei Murai | 3 |
| 3 | Hiroshi Fujimoto | 2 |
| #4 | Atsushi Umaki | 1 |
| #5 | Etsuo Goto | 1 |
| #6 | Hiroshi Kawaguchi | 1 |
| #7 | Hiroshi Takechi | 1 |
| #8 | Hiroyuki Washio | 1 |
| #9 | Ippei Shiode | 1 |
| #10 | Junichi Hatta | 1 |
| #11 | Kazuhide Tsuchiya | 1 |
| #12 | Keigo Yamazaki | 1 |
| #13 | Koji Kobayashi | 1 |
| #14 | Masamichi Abe | 1 |
| #15 | Masahiro Kimura | 1 |
| #16 | Syusei Murai | 1 |
| #17 | Tetsuya Kageyama | 1 |
| #18 | Toshihide Nakama | 1 |