Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8217590 | Window-mounted solar powered illumination device | Shunyung Chang, Sungkai Chen, Kuanwei Lee | 2012-07-10 |
| 7896666 | Socket with securely fixed connecting rings | Shihwei Tung, Chiwei Chen | 2011-03-01 |