Issued Patents All Time
Showing 25 most recent of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12130579 | Cartridge and drum unit for electrophotographic image forming apparatus | Takeshi Arimitsu, Isao Koishi, Yusuke Niikawa | 2024-10-29 |
| 12066786 | Cartridge and drum unit for electrophotographic image forming apparatus | Takeshi Arimitsu, Isao Koishi, Yusuke Niikawa | 2024-08-20 |
| D1015421 | Process cartridge for image forming apparatus | Tachio Kawai, Hiroyuki Munetsugu, Isao Koishi, Yosuke Kashiide, Takashi Kimura +6 more | 2024-02-20 |
| 11835907 | Drum unit, process cartridge and image forming apparatus | Yu Fukasawa | 2023-12-05 |
| 11829096 | Cartridge, attachment and mounting kit | Goshi Ozaki, Isao Koishi, Yukio Kubo, Noriyuki Komatsu, Tetsuo Uesugi | 2023-11-28 |
| 11579561 | Cartridge and drum unit for electrophotographic image forming apparatus | Takeshi Arimitsu, Isao Koishi, Yusuke Niikawa | 2023-02-14 |
| 11392057 | Developing apparatus having a flexible developer conveyor | Yosuke Kashiide, Shohei Katsuya | 2022-07-19 |
| 11334017 | Drum unit, process cartridge and image forming apparatus | Yu Fukasawa | 2022-05-17 |
| 11199807 | Cartridge and drum unit for electrophotographic image forming apparatus | Takeshi Arimitsu, Isao Koishi, Yusuke Niikawa | 2021-12-14 |
| 11016438 | Cartridge, photosensitive member unit and electrophotographic image forming apparatus | Takuya Kawakami, Hiroki Ogino, Kazuhiko Kanno | 2021-05-25 |
| 10962925 | Erroneous mounting prevention system | Isao Koishi, Daisuke Yamamoto | 2021-03-30 |
| 10915060 | Developing device having restricted movement, process cartridge and image forming apparatus | Tachio Kawai, Goshi Ozaki, Shohei Katsuya, Ryota Shibuya, Daisuke Makiguchi | 2021-02-09 |
| 10915055 | Drum unit, process cartridge and image forming apparatus | Yu Fukasawa | 2021-02-09 |
| 10795311 | Cartridge, photosensitive member unit and electrophotographic image forming apparatus | Takuya Kawakami, Hiroki Ogino, Kazuhiko Kanno | 2020-10-06 |
| 10671015 | Cartridge and drum unit for electrophotographic image forming apparatus | Takeshi Arimitsu, Isao Koishi, Yusuke Niikawa | 2020-06-02 |
| 10635047 | Cartridge and image forming apparatus using the cartridge | Hiroyuki Munetsugu, Shohei Katsuya | 2020-04-28 |
| 10613465 | Drum cylinder unit, method for attaching coupling member, and drum unit | Ken Kikuchi, Jun Miyamoto, Tomonori Mori, Daisuke Abe | 2020-04-07 |
| 10452016 | Drum unit, process cartridge and image forming apparatus | Yu Fukasawa | 2019-10-22 |
| 10386751 | Developer container, cartridge, and image-forming apparatus | Naoki Hayashi, Shunsuke Uratani, Toshiteru Yamasaki | 2019-08-20 |
| 10203652 | Cartridge and drum unit for electrophotographic image forming apparatus | Takeshi Arimitsu, Isao Koishi, Yusuke Niikawa | 2019-02-12 |
| D823938 | Cartridge | Shunsuke Uratani, Takeshi Arimitsu, Ryoji Kusudo, Isao Koishi, Yu Fukasawa +3 more | 2018-07-24 |
| D823380 | Cartridge | Shunsuke Uratani, Takeshi Arimitsu, Ryoji Kusudo, Isao Koishi, Yu Fukasawa +3 more | 2018-07-17 |
| 9791825 | Cartridge and drum unit for electrophotographic image forming apparatus | Takeshi Arimitsu, Isao Koishi, Yusuke Niikawa | 2017-10-17 |
| D796574 | Photosensitive drum for cartridge | Isao Koishi, Yu Fukasawa | 2017-09-05 |
| D791866 | Bearing member for cartridge | — | 2017-07-11 |