Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11172121 | Image forming apparatus, cartridge and image forming apparatus system having erroneous cartridge insertion prevention | Masato Tanabe, Yasunori Toriyama, Sadaaki Tani, Yuuki Nakamura | 2021-11-09 |
| 11131959 | Process cartridge and image forming apparatus | Tomonori Mori, Koji Hashimoto | 2021-09-28 |