Issued Patents All Time
Showing 51–55 of 55 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7304439 | Phase-controlled dimmable electronic ballasts for fluorescent lamps with very wide dimming range | Pak-Chuen Tang, Yiu Lam, Ron Shu Yuen Hui | 2007-12-04 |
| 7119494 | Circuit designs and control techniques for high frequency electronic ballasts for high intensity discharge lamps | Shu Yuen Ron Hui | 2006-10-10 |
| 6580275 | Single sensor control of power converters | Shu Yuen Ron Hui | 2003-06-17 |
| 6486615 | Dimming control of electronic ballasts | Shu Yuen Ron Hui | 2002-11-26 |
| 6304068 | Bi-directional switched-capacitor based voltage converter | Shu Yuen Ron Hui | 2001-10-16 |