Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12346053 | Image forming apparatus with first and second couplings for transmission of a rotational drive force to a unit attachable and detachable therefrom | Shinkichi Yamamoto, Hiroshi Kawamura, Yuta Kawaguchi | 2025-07-01 |
| 11841648 | Image forming apparatus | Chikara Imaizumi | 2023-12-12 |
| 11834292 | Driving force transmission device and image forming apparatus | Shunsuke Okazaki | 2023-12-05 |
| 11106160 | Drive transmission device and image forming apparatus including the drive transmission device | — | 2021-08-31 |
| 10996617 | Developing cartridge having a coupling member and a rotatable lever with a contact portion capable of moving the coupling member | — | 2021-05-04 |
| 10920863 | Drive transmission device | — | 2021-02-16 |
| 10824109 | Drive transmission device and image forming apparatus including the same | Junichi Ochi | 2020-11-03 |
| 10704610 | Clutch, drive transmission device and image forming apparatus | — | 2020-07-07 |
| 10642216 | Developing cartridge and electrophotographic image forming apparatus | — | 2020-05-05 |
| 10414606 | Drive transmission apparatus, sheet feeding apparatus and image forming apparatus | — | 2019-09-17 |
| 10310444 | Drive transmission device and image forming apparatus including the same | Junichi Ochi | 2019-06-04 |
| 9989915 | Developing cartridge and electrophotographic image forming apparatus | — | 2018-06-05 |
| 9891580 | Drive transmission device and image forming apparatus including the same | Junichi Ochi | 2018-02-13 |
| 9551957 | Developing cartridge and electrophotographic image forming apparatus | — | 2017-01-24 |
| 8923731 | Developing cartridge and electrophotographic image forming apparatus | — | 2014-12-30 |