Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11243481 | Electrophotographic photosensitive member, process cartridge, and image forming apparatus | Tomofumi SHIMIZU, Hayase Yamamoto | 2022-02-08 |
| 11204561 | Electrophotographic photosensitive member, process cartridge, and image forming apparatus | Tomofumi SHIMIZU, Hayase Yamamoto | 2021-12-21 |
| 10996575 | Electrophotographic photosensitive member, process cartridge, and image forming apparatus | Tomofumi SHIMIZU, Hayase Yamamoto, Jun Azuma | 2021-05-04 |
| 9213229 | Positively chargeable electrophotographic photosensitive member and image forming apparatus | Yuko Iwashita, Yukimasa Watanabe, Junichiro Otsubo, Kazutaka Sugimoto | 2015-12-15 |