Issued Patents 2021
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10976683 | Electrophotographic member, electrophotographic process cartridge, and electrophotographic image forming apparatus | Kazutoshi Ishida, Yuji Sakurai, Minoru Nakamura, Ryo Sugiyama, Toru Ishii | 2021-04-13 |
| 10942471 | Electrophotographic member having a surface layer with a cross-linked urethane resin-containing matrix, process cartridge, and apparatus | Yoshinobu Ogawa, Ryo Sugiyama, Kazuaki Nagaoka, Toru Ishii, Hideya Arimura +4 more | 2021-03-09 |
| 10895823 | Developing roller, process cartridge and electrophotographic image forming apparatus | Masashi Uno, Ryo Sugiyama, Kazuaki Nagaoka | 2021-01-19 |
| 10895824 | Developing roller, process cartridge and electrophotographic image forming apparatus | Ryo Sugiyama, Yoshinobu Ogawa, Masashi Uno, Tomoya Uesugi, Wataru Moriai | 2021-01-19 |