Top Inventors at Osaka Gas Co. 2021
| Rank | Name | Patents |
|---|---|---|
| 1 | Hisao Ohnishi | 4 |
| 2 | Kazuyuki Minami | 3 |
| 3 | Kyohei Manabe | 3 |
| #4 | Mitsuaki Echigo | 3 |
| #5 | Osamu Yamazaki | 3 |
| #6 | Yuji Tsuda | 3 |
| #7 | Atsushi Nonaka | 1 |
| #8 | Hidekazu Kurimoto | 1 |
| #9 | Hiroki Sakamoto | 1 |
| #10 | Makoto Okamura | 1 |
| #11 | Masahiro Suemitsu | 1 |
| #12 | Masahiro Yamada | 1 |
| #13 | Menaka DE ZOYSA | 1 |
| #14 | Naoyoshi MURATA | 1 |
| #15 | Susumu Noda | 1 |
| #16 | Takashi Asano | 1 |
| #17 | Tadashi Saito | 1 |
| #18 | Takuya Suzuki | 1 |
| #19 | Tsuyoshi Kamioka | 1 |
| #20 | Yasuhiro Yamaguchi | 1 |
| #21 | Yuta Arakawa | 1 |