Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6654566 | Developer agitating system, electrophotographic image forming apparatus and cartridge | Seiji Yamaguchi, Motoki Adachi | 2003-11-25 |
| 6640060 | Image forming apparatus with developer density and remaining amount detection | Seiji Yamaguchi, Masao Uyama | 2003-10-28 |