Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6067386 | Method and system for automatic image-property identification for an optical scanner | Frun Leou | 2000-05-23 |
| 6031599 | Photo printer with an adjustable thermal print head | Hans Chang, Jones Chang | 2000-02-29 |
| 5997199 | Paper feeding module of a color picture printer | Hans Chang | 1999-12-07 |