Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6402286 | Function test device for optical print head heaters in thermal bubble printers | Hung-Lieh Hu, Yuan-Liang Lan, Chieh-Wen Wang, Charles Chang | 2002-06-11 |
| 6378978 | Chip structure of inkjet printhead and method of estimating working life through detection of defects | Charles Chang, Chieh-Wen Wang, Ming-Ling Lee, Chen-Yue Cheng, Yuan-Liang Lan | 2002-04-30 |