Top Inventors at Rinnai 2021
| Rank | Name | Patents |
|---|---|---|
| 1 | Takashi Ojiro | 4 |
| 2 | Takahiro Ono | 3 |
| 3 | Yoshio Goto | 2 |
| #4 | Daisuke Naito | 1 |
| #5 | Hideyuki Jinno | 1 |
| #6 | Hirotoshi Taki | 1 |
| #7 | Kentaro Mori | 1 |
| #8 | Masao Nonoyama | 1 |
| #9 | Masaru Takeuchi | 1 |
| #10 | Shigeki Shimada | 1 |
| #11 | Shigeki Takeuchi | 1 |
| #12 | Takuya Iwasaki | 1 |
| #13 | Tatsuyoshi Nakatani | 1 |
| #14 | Yosuke Suzuki | 1 |
| #15 | Yuya Miyazaki | 1 |