Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7271719 | RFID system for monitoring food hygiene | Wei-Jen Chang | 2007-09-18 |
| 7225980 | Shopping cart with RFID capability | Chun-Te Yu, Wei-Jen Chang | 2007-06-05 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7271719 | RFID system for monitoring food hygiene | Wei-Jen Chang | 2007-09-18 |
| 7225980 | Shopping cart with RFID capability | Chun-Te Yu, Wei-Jen Chang | 2007-06-05 |