Issued Patents All Time
Showing 25 most recent of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12306575 | Developer replenishing device and image forming apparatus | Hiroomi Matsuzaki | 2025-05-20 |
| 12174558 | Developer replenishment device and image forming apparatus | Hiroomi Matsuzaki | 2024-12-24 |
| 11960225 | Image forming apparatus | Koji Yamaguchi, Kohei Matsuda, Yasushi Katsuta, Kaori Noguchi, Junko Hirata +4 more | 2024-04-16 |
| 11815830 | Toner cartridge having a variable volume pump and a feeding path from the pump portion to a discharge opening | Hiroomi Matsuzaki, Tetsuo Uesugi | 2023-11-14 |
| 11360416 | Image forming apparatus | Koji Yamaguchi, Kohei Matsuda, Yasushi Katsuta, Kaori Noguchi, Junko Hirata +4 more | 2022-06-14 |
| 11221584 | Image forming apparatus and cartridge with a coupling member that contacts another coupling member by an electrostatic adsorption force | Kojiro Yasui, Seiji Hara | 2022-01-11 |
| 11067938 | Cleaning unit, cartridge, image forming apparatus | Kohei Matsuda, Hiraku Sasaki, Kentaro Kawata, Yasushi Katsuta, Shun Sato | 2021-07-20 |
| 11016438 | Cartridge, photosensitive member unit and electrophotographic image forming apparatus | Shigemi Kamoshida, Takuya Kawakami, Kazuhiko Kanno | 2021-05-25 |
| 10928768 | Cleaning unit, cartridge, image forming apparatus | Kohei Matsuda, Hiraku Sasaki, Kentaro Kawata, Shun Sato, Yasushi Katsuta | 2021-02-23 |
| 10795311 | Cartridge, photosensitive member unit and electrophotographic image forming apparatus | Shigemi Kamoshida, Takuya Kawakami, Kazuhiko Kanno | 2020-10-06 |
| 10739702 | Developer accommodating unit, cartridge and image forming apparatus | Kojiro Yasui | 2020-08-11 |
| 10642189 | Developer container unit, developing apparatus, and process cartridge | Koji Yamaguchi, Fumito Nonaka, Hiroomi Matsuzaki, Shunsuke Uratani | 2020-05-05 |
| 10564594 | Image forming apparatus | Tomonori Matsunaga | 2020-02-18 |
| 10095178 | Image forming apparatus | Tomonori Matsunaga | 2018-10-09 |
| 9772581 | Developer container configured to reduce dead space in the path of the developer | Tomonori Matsunaga | 2017-09-26 |
| 9715191 | Powder feeding mechanism, powder feeding method, developer accommodating container, cartridge and image forming apparatus | Kojiro Yasui | 2017-07-25 |
| 9696658 | Developer container, developing apparatus, process cartridge, and image forming apparatus | Seiji Yamaguchi | 2017-07-04 |
| 9366994 | Developer container, cartridge, and image forming apparatus | Seiichi Shinohara, Kojiro Yasui | 2016-06-14 |
| 9335719 | Interval securing member, developing apparatus, and process cartridge | — | 2016-05-10 |
| 9304484 | Image forming apparatus with moving light exposure units | Tomonori Matsunaga | 2016-04-05 |
| 9229358 | Developing apparatus, process cartridge, and interval guarantee member | — | 2016-01-05 |
| 9110401 | Interval guarantee member, developing apparatus, process cartridge | Tomonori Mori | 2015-08-18 |
| 9042775 | Interval securing member, developing apparatus, and process cartridge | — | 2015-05-26 |
| 9042769 | Developing device, process cartridge, and image forming apparatus | Kojiro Yasui, Tomonori Mori | 2015-05-26 |
| 8081907 | Developer feeding apparatus and developing apparatus | — | 2011-12-20 |