Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6834173 | Image-forming-apparatus process cartridge having a locking portion to prevent the cartridge from disengaging from the image forming apparatus and an image forming apparatus mounting such a cartridge | Koji Yamaguchi, Tatsuya Shiratori | 2004-12-21 |
| 6735403 | IMAGE FORMING APPARATUS TO WHICH A DEVELOPING CARTRIDGE OR PROCESS CARTRIDGE ARE DETACHABLY MOUNTABLE COMPRISING DRIVING CONTROL MEANS FOR PERMITTING AND PREVENTING TRANSMISSION OF A DRIVING FORCE TO A WINDING MEMBER | Tatsuya Shiratori, Kouji Hashimoto, Tachio Kawai | 2004-05-11 |
| D489752 | Image forming apparatus | Koji Yamaguchi, Tomio Noguchi, Yumi Fujiwara | 2004-05-11 |
| 6681088 | Process cartridge, image forming apparatus and separating mechanism for separating developing member from photosensitive drum | Kojiro Yasui, Tadashi Horikawa, Susumu Nittani, Tatsuya Suzuki, Koji Yamaguchi | 2004-01-20 |