Issued Patents All Time
Showing 25 most recent of 160 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12405567 | Process cartridge, electrophotographic image forming apparatus, and electrophotographic photosensitive drum unit | Shigeo Miyabe, Masanari Morioka, Masato Hisano | 2025-09-02 |
| 12298704 | Electrophotographic image forming apparatus, developing apparatus, and coupling member | Masanari Morioka, Shigeo Miyabe | 2025-05-13 |
| 11720054 | Process cartridge, electrophotographic image forming apparatus, and electrophotographic photosensitive drum unit | Shigeo Miyabe, Masanari Morioka, Masato Hisano | 2023-08-08 |
| 11675308 | Electrophotographic image forming apparatus, developing apparatus, and coupling member | Masanari Morioka, Shigeo Miyabe | 2023-06-13 |
| 11619908 | Cartridge | Akinobu Hirayama, Toshiaki Takeuchi | 2023-04-04 |
| 11500327 | Cartridge and electrophotographic image forming apparatus which uses cartridge | Shigeo Miyabe, Masanari Morioka | 2022-11-15 |
| 11353821 | Cartridge | Akinobu Hirayama, Toshiaki Takeuchi | 2022-06-07 |
| 11237517 | Process cartridge, electrophotographic image forming apparatus, and electrophotographic photosensitive drum unit | Shigeo Miyabe, Masanari Morioka, Masato Hisano | 2022-02-01 |
| 11209772 | Cartridge, mounting method for coupling member, and disassemblying method for coupling member | Shigeo Miyabe, Atsushi Takasaka | 2021-12-28 |
| 11204582 | Cartridge and image forming apparatus | Akinobu Hirayama, Toshiaki Takeuchi | 2021-12-21 |
| 11204584 | Electrophotographic image forming apparatus, developing apparatus, and coupling member | Masanari Morioka, Shigeo Miyabe | 2021-12-21 |
| 11156956 | Rotational force transmitting part | Shigeo Miyabe, Masanari Morioka, Masato Hisano | 2021-10-26 |
| 11067949 | Cartridge and electrophotographic image forming apparatus which uses cartridge | Shigeo Miyabe, Masanari Morioka | 2021-07-20 |
| 11061369 | Cartridge and electrophotographic image forming apparatus which uses cartridge | Shigeo Miyabe, Masanari Morioka | 2021-07-13 |
| 11042117 | Cartridge | Akinobu Hirayama, Toshiaki Takeuchi | 2021-06-22 |
| 11036179 | Cartridge | Akinobu Hirayama, Toshiaki Takeuchi | 2021-06-15 |
| 10969734 | Cartridge | Akinobu Hirayama, Toshiaki Takeuchi | 2021-04-06 |
| 10969733 | Cartridge | Akinobu Hirayama, Toshiaki Takeuchi | 2021-04-06 |
| 10962926 | Cartridge | Akinobu Hirayama, Toshiaki Takeuchi | 2021-03-30 |
| 10955795 | Cartridge | Akinobu Hirayama, Toshiaki Takeuchi | 2021-03-23 |
| 10935926 | Cartridge, process cartridge, and image forming apparatus | Toshiaki Takeuchi, Yuuki Nakamura, Kensuke Suzuki | 2021-03-02 |
| 10901360 | Cartridge, mounting method for coupling member, and disassembling method for coupling member | Shigeo Miyabe, Atsushi Takasaka | 2021-01-26 |
| 10877433 | Process cartridge, electrophotographic image forming apparatus, and electrophotographic photosensitive drum unit | Shigeo Miyabe, Masanari Morioka, Masato Hisano | 2020-12-29 |
| 10845756 | Rotational force transmitting part | Shigeo Miyabe, Masanari Morioka, Masato Hisano | 2020-11-24 |
| 10831150 | Cartridge and image forming apparatus | Akinobu Hirayama, Toshiaki Takeuchi | 2020-11-10 |