Issued Patents All Time
Showing 1–9 of 9 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 |
| 10895824 | Developing roller, process cartridge and electrophotographic image forming apparatus | Ryo Sugiyama, Yoshinobu Ogawa, Masashi Uno, Tomoya Uesugi, Wataru Moriai | 2021-01-19 |
| 10895823 | Developing roller, process cartridge and electrophotographic image forming apparatus | Masashi Uno, Ryo Sugiyama, Kazuaki Nagaoka | 2021-01-19 |
| 10831126 | Developing roller having crown-shaped electro-conductive layer with outer surface providing electrically insulating first regions adjacent to second regions having higher conductivity | Minoru Nakamura, Kazuaki Nagaoka, Ryo Sugiyama, Masashi Uno, Fumihiko Utsuno | 2020-11-10 |
| 10642186 | Developing member having outer surface with independent electrically insulating domains, electrophotographic process cartridge, and electrophotographic image forming apparatus | Yuji Sakurai, Minoru Nakamura, Ryo Sugiyama, Kazutoshi Ishida, Hiroshi Morishita +1 more | 2020-05-05 |
| 10310447 | Electrophotographic member, process cartridge, and electrophotographic image forming apparatus | Hiroshi Morishita, Yuji Sakurai, Kazutoshi Ishida, Minoru Nakamura, Toru Ishii +1 more | 2019-06-04 |
| 9952531 | Developing member having alumina particles exposed within protrusions | Toru Ishii, Minoru Nakamura, Hiroshi Morishita | 2018-04-24 |
| 6925922 | Apparatus for removing tiebars after molding of semiconductor chip | Hidekazu Manabe | 2005-08-09 |