Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12411431 | Charging system and image forming system | Yuki Tagawa, Yoshiyuki Hayashi, Kenta Yamakoshi | 2025-09-09 |
| 12105438 | Conductive member, charging device, process cartridge, and image forming apparatus | Toshiyasu Yukawa, Kenta Yamakoshi | 2024-10-01 |
| 12055868 | Conductive member, charging device, process cartridge, and image forming apparatus having surface layer with sea/island structure | Kenta Yamakoshi | 2024-08-06 |
| 11853004 | Electrophotographic photoconductor, process cartridge, and image forming apparatus | Keisuke Kusano, Hideya KATSUHARA, Natsumi Kaneko | 2023-12-26 |
| 11796929 | Electrophotographic photoconductor, process cartridge, and image forming apparatus | Natsumi Kaneko, Hideya KATSUHARA | 2023-10-24 |
| 11796933 | Conductive member, charging device, process cartridge, and image forming apparatus | Kenta Yamakoshi, Fuyuki Kano | 2023-10-24 |
| 11782355 | Charging member, charging device, image forming apparatus, and process cartridge | Fuyuki Kano, Kenta Yamakoshi | 2023-10-10 |
| 9829812 | Electrophotographic photoreceptor, process cartridge, and image forming apparatus | Keisuke Kusano, Masahiro Iwasaki, Jiro Korenaga | 2017-11-28 |
| 9811010 | Electrophotographic photosensitive member, process cartridge, and image forming apparatus | Yasuhiro Niida, Kazuyuki Tada, Jiro Korenaga | 2017-11-07 |
| 9557662 | Electrophotographic photoreceptor, process cartridge, and image forming apparatus | Keisuke Kusano, Jiro Korenaga, Yoshifumi SHOJI | 2017-01-31 |
| 9551945 | Electrophotographic photoreceptor, process cartridge, and image forming apparatus | Kazuyuki Tada, Jiro Korenaga, Yasuhiro Niida | 2017-01-24 |
| 9335644 | Electron transport material, electrophotographic photoreceptor, process cartridge, and image forming apparatus | Masahiro Iwasaki, Shinya Yamamoto, Jiro Korenaga, Daisuke Haruyama, Keisuke Kusano +2 more | 2016-05-10 |
| 8790854 | Electrophotographic photoreceptor, image forming apparatus, and process cartridge | — | 2014-07-29 |
| 8741512 | Additive for electrophotographic photoreceptor, electrophotographic photoreceptor, process cartridge, and image forming apparatus | Masahiro Iwasaki, Yuko YAMANO | 2014-06-03 |
| 8669028 | Electrophotographic photoreceptor, method for producing electrophotographic photoreceptor, image forming apparatus, and process cartridge | Yuko YAMANO, Kazuyuki Tada, Kenji Ikeda, Mitsuhide Nakamura | 2014-03-11 |
| 8652716 | Electrophotographic photoreceptor, image forming apparatus, and process cartridge | Masahiro Iwasaki, Jiro Korenaga, Yuko YAMANO, Daisuke Haruyama | 2014-02-18 |