Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12339597 | Electro-conductive member, process cartridge, and electrophotographic image forming apparatus | Shota Kaneko, Yuichi Kikuchi, Kenji Takashima, Kazuhiro Yamauchi, Satoru Nishioka +1 more | 2025-06-24 |
| 11971683 | Electrophotographic electro-conductive member, process cartridge, and electrophotographic image forming apparatus | Satoru Nishioka, Kazuhiro Yamauchi, Hiroaki Watanabe, Takumi Furukawa, Yasuhiro Fushimoto +3 more | 2024-04-30 |
| 11640122 | Electroconductive member, process cartridge, and image forming apparatus | Yuichi Kikuchi, Satoru Nishioka, Kenji Takashima, Kazuhiro Yamauchi, Takumi Furukawa +4 more | 2023-05-02 |
| 11474442 | Electrophotographic apparatus, process cartridge, and cartridge set | Kosuke Fukudome, Tomohiro Unno, Dai Nozaki, Kozue Uratani, Yuta Komiya +2 more | 2022-10-18 |
| 11449000 | Electrophotographic apparatus, process cartridge, and cartridge set | Tomohiro Unno, Kosuke Fukudome, Dai Nozaki, Kozue Uratani, Yuta Komiya +1 more | 2022-09-20 |
| 11448982 | Electrophotographic apparatus, process cartridge, and cartridge set | Tsuneyoshi Tominaga, Shohei Tsuda, Shohei Kototani, Noriyoshi Umeda, Kazuhiro Yamauchi +1 more | 2022-09-20 |
| 11397388 | Process for producing an electrophotographic electroconductive member | Satoru Nishioka, Kenji Takashima, Yuichi Kikuchi, Kazuhiro Yamauchi, Kana Sato +5 more | 2022-07-26 |
| 11385559 | Electroconductive member, process cartridge, and image forming apparatus | Yuichi Kikuchi, Satoru Nishioka, Kenji Takashima, Kazuhiro Yamauchi, Takumi Furukawa +4 more | 2022-07-12 |
| 11360426 | Electrophotographic apparatus, process cartridge, and cartridge set | Yoshitaka Suzumura, Hiroyuki Tomono, Takuya Mizuguchi, Osamu Matsushita, Shunsuke Matsushita +1 more | 2022-06-14 |
| 11360405 | Electrophotographic apparatus, process cartridge and cartridge set | Hiroyuki Tomono, Yoshitaka Suzumura, Takuya Mizuguchi, Osamu Matsushita, Kazuhiro Yamauchi +1 more | 2022-06-14 |
| 11347156 | Electro-conductive member for electrophotography, process cartridge for electrophotography, and electrophotographic image forming apparatus | Kazuhiro Yamauchi, Satoru Nishioka, Kenji Takashima, Yuichi Kikuchi | 2022-05-31 |
| 11175602 | Electroconductive member, process cartridge, and electrophotographic image forming apparatus | Satoru Nishioka, Kenji Takashima, Yuichi Kikuchi, Kazuhiro Yamauchi, Kana Sato +5 more | 2021-11-16 |
| 11169454 | Electrophotographic electro-conductive member, process cartridge, and electrophotographic image forming apparatus | Satoru Nishioka, Kazuhiro Yamauchi, Hiroaki Watanabe, Takumi Furukawa, Yasuhiro Fushimoto +3 more | 2021-11-09 |
| 11061342 | Electrophotographic apparatus, process cartridge and cartridge set | Noriyoshi Umeda, Tsuneyoshi Tominaga, Shohei Tsuda, Shohei Kototani, Kazuhiro Yamauchi +1 more | 2021-07-13 |
| 10845724 | Electro-conductive member, process cartridge and image forming apparatus | Yuichi Kikuchi, Satoru Nishioka, Kenji Takashima, Kazuhiro Yamauchi, Takumi Furukawa | 2020-11-24 |
| 10678154 | Electrophotographic electroconductive member, process cartridge, and electrophotographic image forming apparatus | Kenji Takashima, Kazuhiro Yamauchi, Yuichi Kikuchi | 2020-06-09 |
| 10678158 | Electro-conductive member for electrophotography, process cartridge, and electrophotographic image forming apparatus | Yuichi Kikuchi, Kazuhiro Yamauchi, Kenji Takashima | 2020-06-09 |
| 9556359 | Method of producing member for electrophotography | Noriko Suzumura, Noriyuki Doi, Hiroki Masu, Masataka Kodama, Noriaki Kuroda | 2017-01-31 |
| 9098010 | Development device, process cartridge, and image forming apparatus | Masato Koyanagi, Gosuke Goto, Kazutoshi Ishida | 2015-08-04 |
| 9081321 | Charging member and electrophotographic apparatus | Masataka Kodama, Taichi Sato, Noriko Suzumura, Noriyuki Doi, Hiroki Masu +1 more | 2015-07-14 |
| 8660472 | Developing roller, process cartridge, and electrophotographic apparatus | Hidenori Satoh, Kazutoshi Ishida | 2014-02-25 |
| 8503916 | Developing roller, process cartridge, and electrophotographic image forming apparatus | Genya Anan | 2013-08-06 |
| 8182405 | Developing roller, developing roller production method, process cartridge, and electrophotographic apparatus | Masaki Yamada, Yuji Sakurai, Minoru Nakamura | 2012-05-22 |
| 7799398 | Developing member and electrophotographic image forming apparatus | Minoru Nakamura, Arihiro Yamamoto, Masaki Yamada | 2010-09-21 |