Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11067938 | Cleaning unit, cartridge, image forming apparatus | Hiroki Ogino, Hiraku Sasaki, Kentaro Kawata, Yasushi Katsuta, Shun Sato | 2021-07-20 |
| 10928768 | Cleaning unit, cartridge, image forming apparatus | Hiraku Sasaki, Hiroki Ogino, Kentaro Kawata, Shun Sato, Yasushi Katsuta | 2021-02-23 |