Top Inventors at Pfu Limited 2021
| Rank | Name | Patents |
|---|---|---|
| 1 | Shigeharu Okano | 4 |
| 2 | Shuichi Morikawa | 3 |
| 3 | Kiyoto Kosaka | 2 |
| #4 | Masaya Takamori | 2 |
| #5 | Shogo Yoshita | 2 |
| #6 | Takayuki Umi | 2 |
| #7 | Yuki Matsuda | 2 |
| #8 | Akifumi Takahashi | 1 |
| #9 | Haruka Shimura | 1 |
| #10 | Hiroyuki Kitano | 1 |
| #11 | Hitoshi Matsuo | 1 |
| #12 | Hiroshi Shiraiwa | 1 |
| #13 | Hyuma Morita | 1 |
| #14 | Kazuhito Seki | 1 |
| #15 | Katsuhito Shimazaki | 1 |
| #16 | Ken Funaki | 1 |
| #17 | Keiji Honda | 1 |
| #18 | Kengo Kawata | 1 |
| #19 | Kentaro Kogawa | 1 |
| #20 | Keiji Michine | 1 |
| #21 | Keiji Ohara | 1 |
| #22 | Kenichi Tamura | 1 |
| #23 | Masaaki Sakai | 1 |
| #24 | Minami Nagasawa | 1 |
| #25 | Naoto Yamaguchi | 1 |
| #26 | Osamu Miyakawa | 1 |
| #27 | Ryou Matsuura | 1 |
| #28 | Seigo Terada | 1 |
| #29 | Shingo Kanaya | 1 |
| #30 | Shinya Orita | 1 |
| #31 | Souichi Yoshida | 1 |
| #32 | Tadayoshi KAGAWA | 1 |
| #33 | Takashi Kobayashi | 1 |
| #34 | Tomoyuki Niwata | 1 |
| #35 | Tomoaki Wada | 1 |