Top Inventors at Yac All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Fumikata Maeda | 2 |
| 2 | Kazunori Tani | 2 |
| 3 | Masaru Shimazaki | 2 |
| #4 | Hatsumi Naruo | 1 |
| #5 | Hidetaka Narukawa | 1 |
| #6 | Kazuhiro Kawaguchi | 1 |
| #7 | Kazuya Tsujino | 1 |
| #8 | Keisuke Yoshida | 1 |
| #9 | Motoya Myoji | 1 |
| #10 | Naoichiro Saito | 1 |
| #11 | Osamu Azegami | 1 |
| #12 | Osamu Kurosu | 1 |
| #13 | Seiji Hayano | 1 |
| #14 | Takeshi Noguchi | 1 |
| #15 | Toshiaki Kimura | 1 |
| #16 | Toshifumi Miyake | 1 |
| #17 | Yasuyuki Takata | 1 |
| #18 | Ichitaro Sarada | 1 |
| #19 | Hunter McKinley | 1 |