Top Inventors at Rigaku 2021
| Rank | Name | Patents |
|---|---|---|
| 1 | Kazuhiko Omote | 4 |
| 2 | Yoshiyasu Ito | 3 |
| 3 | Hiroaki Kita | 2 |
| #4 | Kiyoshi Ogata | 2 |
| #5 | Seiji Fujimura | 2 |
| #6 | Seiitsu Kurita | 2 |
| #7 | Tsutomu Tada | 2 |
| #8 | Yoshiyuki Kataoka | 2 |
| #9 | Yu Aoki | 2 |
| #10 | Adolf Inneman | 1 |
| #11 | Akifusa Higuchi | 1 |
| #12 | Akihiro Himeda | 1 |
| #13 | Damian Kucharczyk | 1 |
| #14 | Hiroshi Kono | 1 |
| #15 | Hiroshi Motono | 1 |
| #16 | Hideaki Takahashi | 1 |
| #17 | Hideo Toraya | 1 |
| #18 | Katsutaka Horada | 1 |
| #19 | Kazuyuki Matsushita | 1 |
| #20 | Keiichi Morikawa | 1 |
| #21 | Kosuke Kawakyu | 1 |
| #22 | Ladislav Pina | 1 |
| #23 | Masaru Kuribayashi | 1 |
| #24 | Masaaki Yamakata | 1 |
| #25 | Motoyuki Yamagami | 1 |
| #26 | Naoki Matsushima | 1 |
| #27 | Ryotaro Yamaguchi | 1 |
| #28 | Satoshi Mikusu | 1 |
| #29 | Satoshi Murakami | 1 |
| #30 | Sei Yoshihara | 1 |
| #31 | Shigematsu Asano | 1 |
| #32 | Shinya Hara | 1 |
| #33 | Shuichi Kato | 1 |
| #34 | Shintaro Kobayashi | 1 |
| #35 | Shiro Umegaki | 1 |
| #36 | Tatsuya Inoue | 1 |
| #37 | Takashi Matsuo | 1 |
| #38 | Takeshi Osakabe | 1 |
| #39 | Takuto Sakumura | 1 |
| #40 | Takashi Yamada | 1 |
| #41 | Tetsuya Ozawa | 1 |
| #42 | Tomohiro Chaki | 1 |
| #43 | Yasukazu Nakaye | 1 |
| #44 | Yayoi Taniguchi | 1 |
| #45 | Yasujiro Yamada | 1 |
| #46 | Yukio Sako | 1 |