Top Inventors at Yamashin-Filter All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Nobuyuki Kitajima | 19 |
| 2 | Mitsunobu Okamoto | 9 |
| 3 | Nobuki Sasaki | 8 |
| #4 | Makoto Ishizuka | 7 |
| #5 | Masanori Wakabayashi | 4 |
| #6 | Meiho Taku | 4 |
| #7 | Mitsuhiro Yamaguchi | 4 |
| #8 | Tatsuhiro OSHITA | 4 |
| #9 | Hideo NAKAOKA | 3 |
| #10 | Youichi NODOMI | 3 |
| #11 | Akiyoshi Komine | 3 |
| #12 | Jiro Inoue | 2 |
| #13 | Megumi Nomoto | 2 |
| #14 | Shinya Hirose | 2 |
| #15 | Takazumi Tange | 2 |
| #16 | Yoshinori Tsurusaki | 2 |
| #17 | Daichi Shigemaru | 1 |
| #18 | Hiroshi Inaba | 1 |
| #19 | Hiroshi Makino | 1 |
| #20 | Hisashi Miyasaka | 1 |
| #21 | Masanori Ishizuka | 1 |
| #22 | Shigeru Hashimoto | 1 |
| #23 | Akihiro Saito | 1 |