Top Inventors at Nippon Closures Co. 2021
| Rank | Name | Patents |
|---|---|---|
| 1 | Satoru Shimada | 2 |
| 2 | Takashi Sugiyama | 2 |
| 3 | Go Oota | 1 |
| #4 | Hiroaki Hayashi | 1 |
| #5 | Jun Wakishima | 1 |
| #6 | Katsumi Enomoto | 1 |
| #7 | Katsumi Hashimoto | 1 |
| #8 | Koshin Ri | 1 |
| #9 | Sei Nakagawa | 1 |
| #10 | Toru Sahara | 1 |
| #11 | Yusuke Tani | 1 |