Issued Patents All Time
Showing 1–25 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12353145 | Developing device | — | 2025-07-08 |
| 11852989 | Developing device | — | 2023-12-26 |
| 11846892 | Developing device | Jun Shirayanagi, Fumiyoshi Saito | 2023-12-19 |
| 11556081 | Developing device | Masafumi Takahashi, Tomohiro Shiomi, Teruaki Tsurusaki, Shunichi Koga, Hideaki Suzuki | 2023-01-17 |
| 11556077 | Image formation apparatus | Tomoyuki Sakamaki, Hideki Fujita, Masashi Wakisaka, Chihiro Tanaka, Masashi Abe | 2023-01-17 |
| 10955768 | Developing apparatus and conveyance screw | — | 2021-03-23 |
| 10908535 | Method for fixing regulating blade, developing device, developer bearing member, and magnet | Masafumi Takahashi, Tomohiro Shiomi, Teruaki Tsurusaki, Shunichi Koga, Hideaki Suzuki | 2021-02-02 |
| 10895826 | Conveyance screw and developing apparatus | — | 2021-01-19 |
| 10877401 | Feeding screw and developing device | Shunsuke Tsuda | 2020-12-29 |
| 10642192 | Developing device having a feeding screw with multiple blade portions | Shunsuke Tsuda, Mitsuyoshi Arakawa, Masahiro Ootsuka, Fumiyoshi Saito | 2020-05-05 |
| 10545432 | Feeding screw and developing device | Shunsuke Tsuda | 2020-01-28 |
| 10152000 | Developing device | — | 2018-12-11 |
| 10146157 | Development apparatus having a multiple screw portion conveyance screw | — | 2018-12-04 |
| 10126683 | Developing apparatus | — | 2018-11-13 |
| 10054872 | Image forming apparatus having removable developing units | — | 2018-08-21 |
| 9804523 | Image forming apparatus | Jun Mochizuki, Shota Soda | 2017-10-31 |
| 9268263 | Development apparatus and image forming apparatus | Takanori Iida, Shinya Suzuki, Ryohei Terada, Ichiro Katsuie, Shoji Naruge +1 more | 2016-02-23 |
| 9170527 | Image forming apparatus having developer replenishment control | — | 2015-10-27 |
| 8879929 | Image forming apparatus | — | 2014-11-04 |
| 8346110 | Image forming apparatus | — | 2013-01-01 |
| 8155543 | Image forming apparatus capable of reducing a lengthy duration of an adjustment control | Hitoshi Ishibashi, Shinji Kobayashi, Kazumi Kobayashi, Fukutoshi Uchida, Takashi Enami +8 more | 2012-04-10 |
| 8009997 | Toner replenishment determination device of an image forming apparatus | Kazumi Kobayashi, Shinji Kobayashi, Fukutoshi Uchida, Takashi Enami, Ryohta Morimoto +8 more | 2011-08-30 |
| 7885556 | Image forming apparatus for correcting a toner density target value | Kohta Fujimori, Shin Hasegawa, Nobutaka Takeuchi, Hitoshi Ishibashi, Yushi Hirayama +8 more | 2011-02-08 |
| 7840152 | Image forming apparatus, process cartridge, cleaning system, and image forming apparatus with cleaning system | Yasushi Koichi, Koji Suzuki, Shigekazu Enoki, Kumiko Hatakeyama | 2010-11-23 |
| 7821677 | Method and apparatus for image forming capable of accurately detecting displacement of transfer images and image density | Kayoko Tanaka, Kohta Fujimori, Shin Hasegawa, Shinji Kato, Nobutaka Takeuchi +8 more | 2010-10-26 |