Top Inventors at Ai & Di Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Katsunari Okamoto | 3 |
| 2 | Kenzo Ishida | 2 |
| 3 | Atsumi Ihara | 2 |
| #4 | Kazumasa Takada | 1 |
| #5 | Takaharu Fujiyama | 1 |
| #6 | Alan Tafapolsky | 1 |
| Rank | Name | Patents |
|---|---|---|
| 1 | Katsunari Okamoto | 3 |
| 2 | Kenzo Ishida | 2 |
| 3 | Atsumi Ihara | 2 |
| #4 | Kazumasa Takada | 1 |
| #5 | Takaharu Fujiyama | 1 |
| #6 | Alan Tafapolsky | 1 |