Issued Patents All Time
Showing 1–25 of 48 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12429811 | Cartridge and image forming apparatus | Naoki Matsumaru, Ryuta Murakami, Akihiro Fujiwara, Akinobu Hirayama, Daisuke Makiguchi +5 more | 2025-09-30 |
| 12072664 | Cartridge and image forming apparatus | Naoki Matsumaru, Ryuta Murakami, Akihiro Fujiwara | 2024-08-27 |
| 12019392 | Process cartridge and electrophotographic image forming apparatus | Ryuta Murakami, Shunsuke Uratani, Yuichiro Inaba | 2024-06-25 |
| 11803153 | Process cartridge and electrophotographic image forming apparatus | Ryuta Murakami, Shunsuke Uratani, Yuichiro Inaba | 2023-10-31 |
| 11720055 | Process cartridge and electrophotographic image forming apparatus | Ryuta Murakami, Shunsuke Uratani, Yuichiro Inaba | 2023-08-08 |
| 11703794 | Cartridge and image forming apparatus | Naoki Matsumaru, Ryuta Murakami, Akihiro Fujiwara | 2023-07-18 |
| 11449001 | Cartridge and image forming apparatus | Akihiro Fujiwara, Naoki Matsumaru, Ryuta Murakami, Daisuke Makiguichi | 2022-09-20 |
| 11402798 | Process cartridge and electrophotographic image forming apparatus | Ryuta Murakami, Shunsuke Uratani, Yuichiro Inaba | 2022-08-02 |
| 11392081 | Process cartridge and electrophotographic image forming apparatus | Ryuta Murakami, Shunsuke Uratani, Yuichiro Inaba | 2022-07-19 |
| 11169483 | Process cartridge and electrophotographic image forming apparatus | Ryuta Murakami, Shunsuke Uratani, Yuichiro Inaba | 2021-11-09 |
| 10962927 | Cartridge and imaging forming apparatus | Akihiro Fujiwara, Naoki Matsumaru, Ryuta Murakami, Daisuke Makiguichi | 2021-03-30 |
| 10901366 | Image forming apparatus and cartridge | Ryuta Murakami, Naoki Matsumaru, Tetsuji Suzuki | 2021-01-26 |
| 10678184 | Image forming apparatus and cartridge | Ryuta Murakami, Naoki Matsumaru, Tetsuji Suzuki | 2020-06-09 |
| 10649394 | Method of manufacturing frame unit, method of manufacturing image carrying unit, method of manufacturing cartridge, and cartridge | Daisuke Makiguchi, Naoki Matsumaru, Ryuta Murakami, Tetsuya Numata | 2020-05-12 |
| 10627780 | Cartridge and image forming apparatus | Akihiro Fujiwara, Naoki Matsumaru, Ryuta Murakami, Daisuke Makiguchi | 2020-04-21 |
| 10564597 | Method for manufacturing image bearing unit and method for manufacturing cartridge | Tetsuya Numata, Ryuta Murakami, Daisuke Makiguchi, Naoki Matsumaru | 2020-02-18 |
| D873341 | Process cartridge for image forming apparatus | Noriyuki Komatsu, Naoki Matsumaru, Ryuta Murakami, Daisuke Makiguchi, Akihiro Fujiwara +2 more | 2020-01-21 |
| 10520883 | Method for manufacturing image bearing unit and method for manufacturing cartridge | Ryuta Murakami, Tetsuya Numata, Daisuke Makiguchi, Naoki Matsumaru | 2019-12-31 |
| 9946195 | Developer container developing device process cartridge and image forming apparatus | Atsushi Takasaka, Naoya Asanuma, Go Torii | 2018-04-17 |
| 9846386 | Developer container, developing device, process cartridge, and image forming apparatus | Atsushi Takasaka, Naoya Asanuma, Go Torii | 2017-12-19 |
| 9389578 | Image-forming apparatus | Tetsuya Numata, Noriyuki Komatsu, Osamu Anan, Yuichi Sakakibara, Ken Kikuchi +1 more | 2016-07-12 |
| 9280136 | Photosensitive cartridge having locking member, developing cartridge attachable to photosensitive cartridge having locking member, process cartridge having locking member, and image forming apparatus having locking member | — | 2016-03-08 |
| 9213267 | Developing device frame unit, developing device, process cartridge, and manufacturing method of the developing device frame unit | Nobuharu Hoshi, Akira Suzuki, Makoto Hayashida, Kazuhiko Kanno | 2015-12-15 |
| 9182733 | Developer supply cartridge, process cartridge and image forming apparatus | Sadaaki Tani, Takahito Ueno | 2015-11-10 |
| 8682211 | Developing device frame unit, developing device, process cartridge, and manufacturing method of the developing device frame unit | Nobuharu Hoshi, Akira Suzuki, Makoto Hayashida, Kazuhiko Kanno | 2014-03-25 |