Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7817028 | System and method for driving LED vehicle lights | Chien-Feng Chang, Zong-Huai Lee, Chih-Hao Tseng | 2010-10-19 |
| 7542861 | Method and system for LED calibration | Chien-Feng Chang, Wei-Chih Liao, Zong-Huai Lee | 2009-06-02 |
| 7429982 | Digital lighting control system | Ching-Hui Chen, Chien-Feng Chang, Chien-Liang Yeh | 2008-09-30 |
| 7303310 | Structure for a high efficiency and water-proof lighting device | Chien-Liang Yeh, Zong-Huai Lee, Chien-Feng Chang, Chan-Peng Lin | 2007-12-04 |
| 7201494 | Lighting system of adjustable color temperature | Chien-Liang Yeh, Zong-Huai Lee, Han-Ping Shieh, Ko-Wei Chien, June-Jay Wang | 2007-04-10 |
| 6290374 | Traffic signal lamp illuminated by light emitting diodes | Han-Ping Shieh, Chong-Min Chang, Keng-Han Chuang, Chung-Jung Chen | 2001-09-18 |