Issued Patents 2004
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6832056 | Memory member, unit, process cartridge and electrophotographic image forming apparatus | Yoshihiro Ito, Toshiyuki Karakama | 2004-12-14 |
| 6804483 | Electrophotographic image forming apparatus and process cartridges | Akiyoshi Yokoi, Toshiyuki Karakama, Toru Oguma | 2004-10-12 |
| 6782213 | Memory member, unit, process cartridge and electrophotographic image forming apparatus | Yoshihiro Ito, Toshiyuki Karakama | 2004-08-24 |
| 6782222 | Image forming apparatus and process cartridge mountable therein in which a gap exists between a main assembly antenna of the apparatus and a memory antenna of the process cartridge mounted thereon | Yoshihiro Ito, Toshiyuki Karakama | 2004-08-24 |
| 6738589 | Process cartridge including convex and concave portions and electrophotographic image forming apparatus to which such a process cartridge is detachably mountable | Toshiyuki Karakama | 2004-05-18 |
| 6704525 | Developing device, process cartridge and electrophotographic image forming apparatus | Toru Oguma, Toshiyuki Karakama, Akiyoshi Yokoi | 2004-03-09 |
| 6701107 | Memory member, unit, process cartridge and electrophotographic image forming apparatus | Toshiyuki Karakama, Yoshihiro Ito | 2004-03-02 |
| 6701106 | Cartridge having developer containing portion with inner pressure regulating function | Akiyoshi Yokoi | 2004-03-02 |
| 6697578 | Memory member, unit, process cartridge and electrophotographic image forming apparatus | Yoshihiro Ito, Toshiyuki Karakama | 2004-02-24 |
| 6684040 | Developing device, process cartridge, electrophotographic image forming apparatus, and developer container and method of assembling the developer container | Akiyoshi Yokoi, Toru Oguma | 2004-01-27 |