Issued Patents All Time
Showing 25 most recent of 55 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12429811 | Cartridge and image forming apparatus | Naoki Matsumaru, Tadashi Horikawa, Akihiro Fujiwara, Akinobu Hirayama, Daisuke Makiguchi +5 more | 2025-09-30 |
| 12287600 | Drum unit, drive transmission unit, cartridge and electrophotographic image forming apparatus | Akihiro Fujiwara | 2025-04-29 |
| 12072667 | Cartridge and image forming apparatus | Yuko Harada, Masakazu Tatsumi, Akira Yoshimura, Satoshi Koga | 2024-08-27 |
| 12072664 | Cartridge and image forming apparatus | Naoki Matsumaru, Tadashi Horikawa, Akihiro Fujiwara | 2024-08-27 |
| 12025941 | Drum unit, drive transmission unit, cartridge and electrophotographic image forming apparatus | Akihiro Fujiwara | 2024-07-02 |
| 12019392 | Process cartridge and electrophotographic image forming apparatus | Tadashi Horikawa, Shunsuke Uratani, Yuichiro Inaba | 2024-06-25 |
| 11927910 | Cartridge and image forming apparatus | Daisuke Makiguchi, Goshi Ozaki, Daisuke Abe, Tachio Kawai | 2024-03-12 |
| 11803153 | Process cartridge and electrophotographic image forming apparatus | Tadashi Horikawa, Shunsuke Uratani, Yuichiro Inaba | 2023-10-31 |
| 11774905 | Electrophotographic image forming apparatus | Yuichiro Inaba, Tetsuji Suzuki, Yoshihiro Ito | 2023-10-03 |
| 11720055 | Process cartridge and electrophotographic image forming apparatus | Tadashi Horikawa, Shunsuke Uratani, Yuichiro Inaba | 2023-08-08 |
| 11703794 | Cartridge and image forming apparatus | Naoki Matsumaru, Tadashi Horikawa, Akihiro Fujiwara | 2023-07-18 |
| 11449001 | Cartridge and image forming apparatus | Akihiro Fujiwara, Tadashi Horikawa, Naoki Matsumaru, Daisuke Makiguichi | 2022-09-20 |
| 11402798 | Process cartridge and electrophotographic image forming apparatus | Tadashi Horikawa, Shunsuke Uratani, Yuichiro Inaba | 2022-08-02 |
| 11392081 | Process cartridge and electrophotographic image forming apparatus | Tadashi Horikawa, Shunsuke Uratani, Yuichiro Inaba | 2022-07-19 |
| 11169483 | Process cartridge and electrophotographic image forming apparatus | Tadashi Horikawa, Shunsuke Uratani, Yuichiro Inaba | 2021-11-09 |
| 10962927 | Cartridge and imaging forming apparatus | Akihiro Fujiwara, Tadashi Horikawa, Naoki Matsumaru, Daisuke Makiguichi | 2021-03-30 |
| 10901366 | Image forming apparatus and cartridge | Naoki Matsumaru, Tadashi Horikawa, Tetsuji Suzuki | 2021-01-26 |
| 10788788 | Electrophotographic image forming apparatus having a driving-force transmission member featuring first and second helical gear portions with opposing twist directions | Yuichiro Inaba, Tetsuji Suzuki, Yoshihiro Ito | 2020-09-29 |
| 10678184 | Image forming apparatus and cartridge | Naoki Matsumaru, Tadashi Horikawa, 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, Tadashi Horikawa, Naoki Matsumaru, Tetsuya Numata | 2020-05-12 |
| 10627780 | Cartridge and image forming apparatus | Akihiro Fujiwara, Tadashi Horikawa, Naoki Matsumaru, Daisuke Makiguchi | 2020-04-21 |
| 10564597 | Method for manufacturing image bearing unit and method for manufacturing cartridge | Tetsuya Numata, Daisuke Makiguchi, Naoki Matsumaru, Tadashi Horikawa | 2020-02-18 |
| D873341 | Process cartridge for image forming apparatus | Tadashi Horikawa, Noriyuki Komatsu, Naoki Matsumaru, Daisuke Makiguchi, Akihiro Fujiwara +2 more | 2020-01-21 |
| 10520883 | Method for manufacturing image bearing unit and method for manufacturing cartridge | Tadashi Horikawa, Tetsuya Numata, Daisuke Makiguchi, Naoki Matsumaru | 2019-12-31 |
| 10303116 | Electrophotographic image forming apparatus having a driving-force transmission member featuring first and second helical gear portions with opposing twist directions | Yuichiro Inaba, Tetsuji Suzuki, Yoshihiro Ito | 2019-05-28 |