Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6705699 | Image output device for improving image resolution and tone expression | Ben-Chuan Du | 2004-03-16 |
| 6679577 | Method of performing printhead maintenance | Ben-Chuan Du | 2004-01-20 |