Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12346052 | Electrophotographic electro-conductive member, electrophotographic image forming apparatus, and process cartridge | Shota Segawa, Syoji Inoue | 2025-07-01 |
| 12306576 | Electroconductive member, process cartridge, and device for forming electrophotographic image | Shota Segawa, Yasuhiro Fushimoto, Syoji Inoue | 2025-05-20 |
| 10558149 | Roller for electrphotography and production method thereof, and electrophotographic image forming apparatus | Yoshimasa Sawada, Shoji Inoue | 2020-02-11 |
| 9983516 | Roller for electrophotography and production method thereof, and electrophotographic image forming apparatus | Yoshimasa Sawada, Shoji Inoue | 2018-05-29 |
| 7283771 | Charging roller | Tomoya Kawakami, Ayumi Okuda, Hiroshi Abe | 2007-10-16 |
| 7209683 | Charging roller featuring specified ratio of storage elastic modulus and dynamic viscoelasticity values and process cartridge and electrophotographic apparatus featuring the same | Hiroshi Abe, Ayumi Okuda, Tomoya Kawakami | 2007-04-24 |
| 7171141 | Charging roller, process cartridge and electrophotographic apparatus | Hiroshi Abe | 2007-01-30 |
| 7171142 | Conductive roller, and process cartridge and electrophotographic apparatus which have conductive roller | Tomoya Kawakami, Hiroshi Abe, Ayumi Okuda | 2007-01-30 |
| 6771920 | Charging roller including a conductive cover layer being formed of a seamless tube, process cartridge and electrophotographic image forming apparatus including such a charging roller | Hiroshi Abe, Akihiro Suzuki | 2004-08-03 |