Issued Patents All Time
Showing 1–25 of 74 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11868064 | Image forming apparatus with a toner conveying device having a reverse-flow conveying portion | Kohta Sakaya, Shintaro Yamada | 2024-01-09 |
| 11703452 | Method and apparatus for measuring transmittance of quartz crucible | Keiichi Takanashi, Takeshi Fujita, Eriko Kitahara, Masanori Fukui | 2023-07-18 |
| 11513464 | Image forming apparatus having an apparatus body and a detachable unit including a rotary body and drive gear | Hiroshi Hosokawa, Hiroshi Fujiwara, Kazuki Matsumoto | 2022-11-29 |
| 11361462 | Method of evaluating inner circumference of quartz crucible and quartz crucible inner circumference evaluation apparatus | Keiichi Takanashi, Toshihiko Uchida | 2022-06-14 |
| 9921541 | Developing device, and image forming apparatus and process cartridge incorporating same | Akira Azami, Masaaki Yamada, Yoshiko Ogawa, Toshio Koike, Mutsuki Morinaga +4 more | 2018-03-20 |
| 9864307 | Image forming apparatus with a controller to set transfer bias | Kenji Sengoku, Hiromi Ogiyama, Hiroyoshi Haga, Tomokazu Takeuchi, Junpei Fujita | 2018-01-09 |
| 9772579 | Developing device and image forming apparatus incorporating same | Yuki Oshikawa, Akira Azami, Yoshiko Ogawa, Masaaki Yamada, Yoshihiro Fujiwara +6 more | 2017-09-26 |
| 9625851 | Developing device and image forming apparatus incorporating same | Yuki Oshikawa, Akira Azami, Yoshiko Ogawa, Masaaki Yamada, Yoshihiro Fujiwara +6 more | 2017-04-18 |
| 9535375 | Image forming apparatus with transfer output device outputting superimposed bias as transfer bias | Shinya Tanaka, Hirokazu Ishii, Keigo Nakamura | 2017-01-03 |
| 9488937 | Image forming apparatus | Shinya Tanaka, Hirokazu Ishii, Hiromi Ogiyama, Keigo Nakamura | 2016-11-08 |
| 9454107 | Image forming apparatus | Shinya Tanaka, Hirokazu Ishii, Keigo Nakamura | 2016-09-27 |
| 9323170 | Image forming apparatus with a controller to set transfer bias | Kenji Sengoku, Hiromi Ogiyama, Hiroyoshi Haga, Tomokazu Takeuchi, Junpei Fujita | 2016-04-26 |
| 9291955 | Image forming apparatus and transfer bias application device therein | Keigo Nakamura, Hiromi Ogiyama, Hirokazu Ishii, Shinya Tanaka | 2016-03-22 |
| 9291934 | Image forming apparatus | Hiromi Ogiyama, Hirokazu Ishii, Shinya Tanaka, Keigo Nakamura | 2016-03-22 |
| 9285722 | Image forming apparatus having transfer bias control | Shinya Tanaka, Hirokazu Ishii, Keigo Nakamura | 2016-03-15 |
| 9195179 | Transfer device and image forming apparatus including same | Shinya Tanaka, Hiromi Ogiyama, Hirokazu Ishii, Keigo Nakamura | 2015-11-24 |
| 9164462 | Image forming apparatus | Keigo Nakamura, Hirokazu Ishii, Hiromi Ogiyama, Shinya Tanaka | 2015-10-20 |
| 9152070 | Transfer device and image forming apparatus | Hiromi Ogiyama, Tomokazu Takeuchi, Kenji Sengoku, Hiroyoshi Haga | 2015-10-06 |
| 9122207 | Image forming apparatus and transfer bias application device therein | Keigo Nakamura, Hiromi Ogiyama, Hirokazu Ishii, Shinya Tanaka | 2015-09-01 |
| 9075350 | Image forming apparatus to maintain adequate transferability of toner to a recording medium | Shinya Tanaka, Hirokazu Ishii, Keigo Nakamura | 2015-07-07 |
| 9075383 | Image forming apparatus | Kenji Sengoku, Hiroyoshi Haga, Hiromi Ogiyama, Tomokazu Takeuchi | 2015-07-07 |
| 9057991 | Image forming apparatus | Hiroyoshi Haga, Tomokazu Takeuchi, Hiromi Ogiyama, Kenji Sengoku, Junpei Fujita | 2015-06-16 |
| 9046830 | Image forming apparatus | Shinya Tanaka, Hirokazu Ishii, Takehide Mizutani, Keigo Nakamura | 2015-06-02 |
| 9037022 | Image forming apparatus, image forming system, and transfer method | Tomokazu Takeuchi, Hiroyoshi Haga, Hiromi Ogiyama, Kenji Sengoku, Junpei Fujita | 2015-05-19 |
| 9031436 | Image forming apparatus | Hiroyoshi Haga, Tomokazu Takeuchi, Hiromi Ogiyama, Kenji Sengoku, Junpei Fujita | 2015-05-12 |