Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8786513 | Device and grounding device for enhancing EMS and wireless communication device | Dau-Chyrh Chang, Cheng-Wei Chen | 2014-07-22 |
| 8780005 | Wireless security device | Cheng-Wei Chen, Dau-Chyrh Chang | 2014-07-15 |