Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7589675 | Broadband antenna | Chih-Chen Chang | 2009-09-15 |
| 7573425 | Antenna for radio frequency identification RFID tags | Chih-Chen Chang | 2009-08-11 |
| 7280043 | Apparatus for impeding counterfeiting, impeding stealing and managing optical disk stock | Yuh-Jou Tsen, Chih-Chen Chang | 2007-10-09 |