Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6771924 | Image forming apparatus having different modes for preventing defective cleaning | — | 2004-08-03 |
| 6704524 | Method of detecting life of image bearing member, image forming apparatus and cartridge | Yasuyuki Ishii | 2004-03-09 |