Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6780553 | Electrophotographic photoreceptor and management system of the same | Kenichi Nagata, Masanori Matsumoto, Yoshimi Kojima | 2004-08-24 |
| 6775497 | Electrophotographic photosensitive body with hollow base and filler element, electrophotographic apparatus using same | Koichi Toriyama, Mikio Kakui, Rikiya Matsuo, Hisayuki Utsumi, Masanori Matsumoto +1 more | 2004-08-10 |