Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11199807 | Cartridge and drum unit for electrophotographic image forming apparatus | Takeshi Arimitsu, Isao Koishi, Yusuke Niikawa | 2021-12-14 |
| 11016438 | Cartridge, photosensitive member unit and electrophotographic image forming apparatus | Takuya Kawakami, Hiroki Ogino, Kazuhiko Kanno | 2021-05-25 |
| 10962925 | Erroneous mounting prevention system | Isao Koishi, Daisuke Yamamoto | 2021-03-30 |
| 10915055 | Drum unit, process cartridge and image forming apparatus | Yu Fukasawa | 2021-02-09 |
| 10915060 | Developing device having restricted movement, process cartridge and image forming apparatus | Tachio Kawai, Goshi Ozaki, Shohei Katsuya, Ryota Shibuya, Daisuke Makiguchi | 2021-02-09 |