Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12259674 | Electroconductive member, process cartridge, and electrophotographic image formation device | Kenji Takashima, Kazuhiro Yamauchi, Satoru Nishioka, Yuichi Kikuchi, Masaki Yamada | 2025-03-25 |
| 11971683 | Electrophotographic electro-conductive member, process cartridge, and electrophotographic image forming apparatus | Satoru Nishioka, Kazuhiro Yamauchi, Hiroaki Watanabe, Yasuhiro Fushimoto, Masahiro Kurachi +3 more | 2024-04-30 |
| 11640122 | Electroconductive member, process cartridge, and image forming apparatus | Yuichi Kikuchi, Satoru Nishioka, Kenji Takashima, Kazuhiro Yamauchi, Masahiro Kurachi +4 more | 2023-05-02 |
| 11619890 | Electro-conductive member, manufacturing method thereof, process cartridge, and electrophotographic image forming apparatus | Atsushi Uematsu, Takashi Hiramatsu | 2023-04-04 |
| 11586121 | Electrophotographic electro-conductive member, process cartridge, and electrophotographic image forming device | Masaki Yamada, Yuichi Kikuchi, Kenji Takashima, Tetsuo Hino, Kazuhiro Yamauchi | 2023-02-21 |
| 11397388 | Process for producing an electrophotographic electroconductive member | Satoru Nishioka, Masahiro Kurachi, Kenji Takashima, Yuichi Kikuchi, Kazuhiro Yamauchi +5 more | 2022-07-26 |
| 11385559 | Electroconductive member, process cartridge, and image forming apparatus | Yuichi Kikuchi, Satoru Nishioka, Kenji Takashima, Kazuhiro Yamauchi, Masahiro Kurachi +4 more | 2022-07-12 |
| 11378910 | Process cartridge and image forming apparatus | Takashi Mukai, Takashi Hiramatsu, Shuhei Tokiwa, Takayuki Namiki, Yuichi Kikuchi +1 more | 2022-07-05 |
| 11307509 | Electro-conductive member, method for producing same, process cartridge and electrophotographic image forming apparatus | Tetsuo Hino, Yasuhiro Fushimoto, Norifumi Muranaka, Masafumi Kyogaku, Masaki Yamada +5 more | 2022-04-19 |
| 11175602 | Electroconductive member, process cartridge, and electrophotographic image forming apparatus | Satoru Nishioka, Masahiro Kurachi, Kenji Takashima, Yuichi Kikuchi, Kazuhiro Yamauchi +5 more | 2021-11-16 |
| 11169454 | Electrophotographic electro-conductive member, process cartridge, and electrophotographic image forming apparatus | Satoru Nishioka, Kazuhiro Yamauchi, Hiroaki Watanabe, Yasuhiro Fushimoto, Masahiro Kurachi +3 more | 2021-11-09 |
| 11112748 | Developing member, process cartridge and electrophotographic apparatus | Masaki Yamada, Yuichi Kikuchi, Tetsuo Hino, Kazuhiro Yamauchi, Hiroaki Watanabe +3 more | 2021-09-07 |
| 10845724 | Electro-conductive member, process cartridge and image forming apparatus | Yuichi Kikuchi, Satoru Nishioka, Kenji Takashima, Kazuhiro Yamauchi, Masahiro Kurachi | 2020-11-24 |
| 10663913 | Process cartridge and electrophotographic apparatus | Tatsuya Yamaai, Kazunori Noguchi, Shuhei Iwasaki, Akira Sakakibara, Daisuke Miura +2 more | 2020-05-26 |
| 10558136 | Charging member, manufacturing method of charging member, electrophotographic apparatus, and process cartridge | Hiroaki Watanabe, Kenya Terada, Yuya Tomomizu, Toshimitsu Nakazawa | 2020-02-11 |
| 10545453 | Process cartridge and electrophotographic apparatus | Shuhei Iwasaki, Kazunori Noguchi, Harunobu Ogaki, Tatsuya Yamaai, Daisuke Miura +2 more | 2020-01-28 |
| 10416588 | Charging member, process cartridge, electrophotographic image forming apparatus, and method for manufacturing charging member | Hiroki Masu, Kazuhiro Yamauchi, Yuichi Kikuchi, Masaki Tsunoda | 2019-09-17 |
| 10401779 | Image forming apparatus | Shinji Katagiri, Tsuguhiro Yoshida, Shuichi Tetsuno, Takayuki Tanaka, Takahiro Ikeda +1 more | 2019-09-03 |
| 10317811 | Charging member, method for producing same, process cartridge and electrophotographic image forming apparatus | Yuya Tomomizu, Hiroaki Watanabe, Kenya Terada, Kazuhiro Gesho | 2019-06-11 |
| 10146149 | Charging member, electrophotographic process cartridge, and electrophotographic image forming apparatus | Hiroaki Watanabe, Yuya Tomomizu, Kenya Terada, Toshiro Suzuki, Kenichi Yazawa +1 more | 2018-12-04 |
| 10060028 | Charging member, manufacturing method therefor, a process cartridge, and electrophotographic apparatus | Taichi Sato | 2018-08-28 |
| 9910379 | Charging member with concave portions containing insulating particles and electrophotographic apparatus | Hiroaki Watanabe, Kenya Terada, Yuya Tomomizu, Toshiro Suzuki, Kenichi Yazawa +1 more | 2018-03-06 |
| 9904199 | Charging member having outer surface with concave portions bearing exposed elastic particles, and electrophotographic apparatus | Kenya Terada, Hiroaki Watanabe, Yuya Tomomizu, Toshiro Suzuki, Kenichi Yazawa +1 more | 2018-02-27 |
| 9360833 | Charging member, process cartridge and electrophotographic apparatus | Kenya Terada, Masaaki Harada, Hiroaki Watanabe, Keiji Nose | 2016-06-07 |
| 8991053 | Charging member, process for its production, and electrophotographic apparatus | Hiroaki Watanabe, Masaaki Harada, Keiji Nose, Kenya Terada | 2015-03-31 |