Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7153621 | Electrophotographic photoreceptor and image forming apparatus using the photoreceptor | Narihito Kojima, Ryuta Takeichi, Hiroshi Nagame, Yohta Sakon | 2006-12-26 |
| 7139512 | Charging device, process cartridge and image forming apparatus | Takayuki Maruta | 2006-11-21 |
| 6799010 | Image forming apparatus having image carrier released from intermediate transfer body | — | 2004-09-28 |
| 6558862 | Electrophotographic photoreceptor and image forming apparatus using the photoreceptor | Narihito Kojima, Ryuta Takeichi, Hiroshi Nagame, Yohta Sakon | 2003-05-06 |
| 6521386 | Electrophotographic photoreceptor and electrophotographic image forming method and apparatus using the photoreceptor | Yohta Sakon, Narihito Kojima, Minoru Umeda, Masao Yoshikawa, Hiroshi Nagame +1 more | 2003-02-18 |