Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9462648 | Method and arrangement for remotely driving light emitting diodes from a three-phase power source via a single phase cable system | Chung Ping Kevin Lo, Wa Hing Leung | 2016-10-04 |
| 9445472 | Method and circuit for driving light-emitting diodes from three-phase power source | Chung Ping Kevin Lo, Wa Hing Leung | 2016-09-13 |
| 9357604 | Light engine with LED switching array | Wa Hing Leung | 2016-05-31 |
| 9161400 | Method and apparatus for cancelling output current ripples in LED driving circuits | Wa Hing Leung, Siu Hong Wong, BO TIAN | 2015-10-13 |
| 9161404 | AC LED array configuration switching circuit triggered by source voltage level | Siu Hong Wong, Wa Hing Leung | 2015-10-13 |
| 8928241 | Method and apparatus for controlling brightness of light emitting diodes | Chung Ping Kevin Lo, Kwok Hung Poon, Wa Hing Leung | 2015-01-06 |
| 8723439 | Triac dimmable power supply unit for LED | Wa Hing Leung | 2014-05-13 |
| 7446643 | Resetable over-current and/or over-temperature protection system | Yim-Shu Lee, Jianqing Li, Martin Hoi-Lam Chow | 2008-11-04 |