Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12235606 | Process cartridge | Masatake Tanaka, Shintaro Kawaguchi, Masamichi Sato | 2025-02-25 |
| 12158724 | Electrophotographic member, process cartridge, and electrophotographic image forming apparatus | Akio Nishi, Toru Ishii, Kazuaki Nagaoka | 2024-12-03 |
| 11650516 | Developing apparatus, electrophotography process cartridge, and electrophotographic image forming apparatus | Kazuaki Nagaoka, Toru Ishii, Ryo Sugiyama, Akio Nishi, Kentaro Yamawaki +1 more | 2023-05-16 |
| 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, Kenta Matsunaga, Toru Ishii +4 more | 2021-03-09 |
| 10895824 | Developing roller, process cartridge and electrophotographic image forming apparatus | Ryo Sugiyama, Yoshinobu Ogawa, Masashi Uno, Kenta Matsunaga, Wataru Moriai | 2021-01-19 |
| 10031438 | Electrophotographic member, developing apparatus and image forming apparatus | Kazuhito Wakabayashi, Minoru Ito | 2018-07-24 |
| 9581934 | Developing apparatus, developing method, image forming apparatus, and image forming method | Minoru Ito, Masaki Yamada, Kazuhito Wakabayashi, Michihisa Magome, Takashi Matsui | 2017-02-28 |
| 9442419 | Developing apparatus, developing method, image forming apparatus, and image forming method | Kazuhito Wakabayashi, Masaki Yamada, Minoru Ito, Michihisa Magome, Takashi Matsui | 2016-09-13 |
| 9017239 | Electrophotographic member, process cartridge and electrophotographic apparatus | Kazutoshi Ishida, Hidenori Satoh | 2015-04-28 |
| 8846287 | Electrophotographic member, process cartridge and electrophotographic apparatus | Masaki Yamada, Kazutoshi Ishida, Minoru Ito, Kazuhito Wakabayashi | 2014-09-30 |
| 8837985 | Electrophotographic member and electrophotographic apparatus | Kazutoshi Ishida, Masaki Yamada, Minoru Ito, Kazuhito Wakabayashi | 2014-09-16 |