Issued Patents All Time
Showing 1–25 of 85 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12271148 | Drum unit having electrical contact surface positioned at outer surface of frame and image forming apparatus provided with the same | Nao Itabashi, Yohei Hashimoto, Kouji Watanabe, Makoto Souda | 2025-04-08 |
| 12197168 | Developing cartridge including shaft and cam having cam surface | Yuwen Wang, Junichi Hashimoto, Kazuaki Ooka | 2025-01-14 |
| 12174557 | Developer cartridge | Yuwen Wang, Kazuaki Ooka, Junichi Hashimoto | 2024-12-24 |
| 12032329 | Developing cartridge including shaft and cam having cam surface | Yuwen Wang, Junichi Hashimoto, Kazuaki Ooka | 2024-07-09 |
| 12032307 | Developing cartridge having electrode contactable with another electrode by pivot motion of the cartridge | Yuwen Wang, Junichi Hashimoto, Kazuaki Ooka | 2024-07-09 |
| 11921457 | Drum unit | Yuwen Wang, Junichi Hashimoto, Kazuaki Ooka | 2024-03-05 |
| 11853002 | Drum unit having electrical contact surface positioned at outer surface of frame and image forming apparatus provided with the same | Nao Itabashi, Yohei Hashimoto, Kouji Watanabe, Makoto Souda | 2023-12-26 |
| 11774902 | Drum unit having electrical contact surface positioned at outer surface of frame and image forming apparatus provided with the same | — | 2023-10-03 |
| 11714378 | Developing cartridge including shaft and cam having cam surface | Yuwen Wang, Junichi Hashimoto, Kazuaki Ooka | 2023-08-01 |
| 11693331 | Developer cartridge | Yuwen Wang, Kazuaki Ooka, Junichi Hashimoto | 2023-07-04 |
| 11573503 | Developing cartridge having electrode contactable with another electrode by pivot motion of the cartridge | Yuwen Wang, Junichi Hashimoto, Kazuaki Ooka | 2023-02-07 |
| 11550252 | Drawer including drawer frame, connector, and holder holding the same and movable relative to drawer frame | Shota Shinoya, Yuwen Wang | 2023-01-10 |
| 11500322 | Image forming apparatus | Shota Shinoya | 2022-11-15 |
| 11429060 | Drum unit having electrical contact surface positioned at outer surface of frame and image forming apparatus provided with the same | — | 2022-08-30 |
| 11320779 | Drum unit | Yuwen Wang, Junichi Hashimoto, Kazuaki Ooka | 2022-05-03 |
| 11262695 | Drum unit having electrical contact surface positioned at outer surface of frame and image forming apparatus provided with the same | Nao Itabashi, Yohei Hashimoto, Kouji Watanabe, Makoto Souda | 2022-03-01 |
| 11256208 | Developing cartridge including shaft and cam having cam surface | Yuwen Wang, Junichi Hashimoto, Kazuaki Ooka | 2022-02-22 |
| 11249418 | Developer cartridge | Yuwen Wang, Kazuaki Ooka, Junichi Hashimoto | 2022-02-15 |
| 11204579 | Drawer including photosensitive drum and frame, and image forming apparatus provided with the same | Yuwen Wang, Junichi Hashimoto, Kazuaki Ooka | 2021-12-21 |
| 11054765 | Drum cartridge and image forming apparatus | — | 2021-07-06 |
| 10996615 | Image forming apparatus | Shota Shinoya | 2021-05-04 |
| 10962923 | Developing cartridge including shaft and cam having cam surface | Yuwen Wang, Junichi Hashimoto, Kazuaki Ooka | 2021-03-30 |
| 10955793 | Drum unit having electrical contact surface positioned at outer surface of frame and image forming apparatus provided with the same | — | 2021-03-23 |
| 10942485 | Drum unit | Yuwen Wang, Junichi Hashimoto, Kazuaki Ooka | 2021-03-09 |
| 10890857 | Developing cartridge having electrode contactable with another electrode by pivot motion of the cartridge | Yuwen Wang, Junichi Hashimoto, Kazuaki Ooka | 2021-01-12 |