Issued Patents 2004
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6832057 | Developing device, process cartridge, and electrophotographic image forming apparatus | Ken Kikuchi | 2004-12-14 |
| 6804475 | PROCESS CARTRIDGE COMPRISING GROUNDING, CHARGING BIAS, AND DEVELOPING BIAS CONTACTS AND INPUT AND OUTPUT CONTACTS, AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS TO WHICH THE PROCESS CARTRIDGE IS DETACHABLY MOUNTABLE | Toshiyuki Karakama, Akiyoshi Yokoi | 2004-10-12 |
| 6804476 | Process cartridge and developing device detachably attachable to image forming apparatus main body and having developer seal member with grip portion, and such image forming apparatus | Akiyoshi Yokoi, Masataka Mochizuki | 2004-10-12 |
| 6804483 | Electrophotographic image forming apparatus and process cartridges | Akiyoshi Yokoi, Kazushi Watanabe, Toshiyuki Karakama | 2004-10-12 |
| D492958 | Image forming apparatus | Toshiyuki Karakama, Akiyoshi Yokoi, Noriyuki Komatsu | 2004-07-13 |
| 6735405 | Method of remanufacturing process cartridge and developing device | Akiyoshi Yokoi, Ken Kikuchi, Ryuta Murakami | 2004-05-11 |
| 6704525 | Developing device, process cartridge and electrophotographic image forming apparatus | Kazushi Watanabe, Toshiyuki Karakama, Akiyoshi Yokoi | 2004-03-09 |
| 6684040 | Developing device, process cartridge, electrophotographic image forming apparatus, and developer container and method of assembling the developer container | Akiyoshi Yokoi, Kazushi Watanabe | 2004-01-27 |