Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6814468 | Structure of light box assembly | Yu-Chang Chang, Kun-Yan Wu, Yao-Lung Tsai | 2004-11-09 |
| 6672737 | Uniform radiation intensity generation box using a symmetrical lighting source | Douglas Wang, Wei Shang Cheng, Yu-Chang Chang, Kueng Yan Wu | 2004-01-06 |