Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11625000 | Process unit and image forming apparatus | — | 2023-04-11 |
| 10146171 | Image forming apparatus capable of preventing waste toner from entering into processing unit | Yasuhiro Nishimura | 2018-12-04 |
| 9778590 | Charging device, process cartridge, and image forming apparatus | Yasuhiro Nishimura | 2017-10-03 |
| 8139974 | Exhaust device, image forming apparatus including the same, recording medium on which control program for exhaust device is recorded | — | 2012-03-20 |
| 7934316 | Charging roller, process cartridge and image forming apparatus | Toshiaki Kagawa, Kouji Shinkawa | 2011-05-03 |
| 7894741 | Cleaning device which cleans a contact charging member that is disposed in contact with an image bearing member | Kohji Shinkawa | 2011-02-22 |
| 7869743 | Image forming apparatus, process cartridge used therein, and production method of charging roller | Toshiaki Kagawa, Kouji Shinkawa | 2011-01-11 |
| 7706703 | Changing the charging applied voltage control in an image forming apparatus based on an increase in the cumulative number of times of execution of image forming | Kohji Shinkawa | 2010-04-27 |
| 7668484 | Charging roller and image forming apparatus incorporating same | Toshiaki Kagawa, Kouji Shinkawa | 2010-02-23 |
| 7285158 | Recording agent, image forming device, and image forming method | Takuya Iwanami, Haruo Yamamoto, Satoshi Nishigaki | 2007-10-23 |
| 6885418 | Transmission/reflection type color liquid crystal display device | Tomohisa Matsushita, Kazuya Yoshimura | 2005-04-26 |
| 6639645 | Warp resistant liquid crystal display device | — | 2003-10-28 |
| 6501521 | Transmission/reflection type color liquid crystal display device | Tomohisa Matsushita, Kazuya Yoshimura | 2002-12-31 |