Top Inventors at Nippon Itf All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Hideki Moriguchi | 5 |
| 2 | Takehiko Ooshiro | 5 |
| 3 | Hiroyuki Sugiura | 4 |
| #4 | Takahiro Okazaki | 4 |
| #5 | Yoshihiro Ito | 4 |
| #6 | Akinori Shibata | 4 |
| #7 | Koji Miyake | 3 |
| #8 | Katsuaki Ogawa | 2 |
| #9 | Masanori Tsujioka | 2 |
| #10 | Satoshi Yoshida | 2 |
| #11 | Tadashi Saito | 2 |
| #12 | Tetsumi Arahi | 2 |
| #13 | Yoshikazu Tanaka | 2 |
| #14 | Hiroshi Ishizuka | 1 |
| #15 | Hisanori Ohara | 1 |
| #16 | Hideo Yanashima | 1 |
| #17 | Kazuhiko Irisawa | 1 |
| #18 | Ken Yoshihara | 1 |
| #19 | Masaki Moronuki | 1 |
| #20 | Makoto Setoyama | 1 |
| #21 | Naoto Okazaki | 1 |
| #22 | Shinya Kanazawa | 1 |
| #23 | Shinji Narahara | 1 |
| #24 | Takashi Matsui | 1 |
| #25 | Tomoyasu Matsuno | 1 |
| #26 | Yoshiharu Utsumi | 1 |
| #27 | Yukako Fukutani | 1 |