Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11150598 | Developer supply container and developer supplying system | Hiromasa Katayama, Akihito Kamura, Katsuya Murakami | 2021-10-19 |
| 11137714 | Developer supply container and developer supplying system | Ayatomo Okino, Katsuya Murakami, Toshiaki Nagashima, Fumio Tazawa | 2021-10-05 |
| 11067918 | Developer supply container and developer supplying apparatus | Ayatomo Okino, Takao Nakajima | 2021-07-20 |