Issued Patents All Time
Showing 26–50 of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9839090 | Correlated colour temperature control system and method | Huan Chen, Siew Chong Tan | 2017-12-05 |
| 9812889 | Battery charging system | — | 2017-11-07 |
| 9787102 | Auxiliary circuits for selection and enhancement of multi-frequency wireless power transfer to multiple loads | Wenxing Zhong | 2017-10-10 |
| 9590523 | Self-driven AC-DC synchronous rectifier for power applications | Wenxing Zhong, Ho Wing Choi | 2017-03-07 |
| 9313846 | Driver for two or more parallel LED light strings | Wu Chen | 2016-04-12 |
| 9107267 | Method and numerical tool for optimizing light emitting diode systems | — | 2015-08-11 |
| 8917057 | Battery charging system | — | 2014-12-23 |
| 8913409 | Self-driven AC-DC synchronous rectifier for power applications | Wenxing Zhong, Ho Wing Choi | 2014-12-16 |
| 8829884 | Current balancing circuit and method | Wenxing Zhong, Sinan Li, Wu Chen | 2014-09-09 |
| 8624545 | Portable electronic device with antenna and power transfer coil | Quan Xue, Kwun Chiu Wan | 2014-01-07 |
| 8519668 | Inductive battery charger system with primary transformer windings formed in a multi-layer structure | — | 2013-08-27 |
| 8339078 | Apparatus and method for providing information relating to a motor | — | 2012-12-25 |
| 8299753 | Inductive battery charger system with primary transfomer windings formed in a multi-layer structure | — | 2012-10-30 |
| 8300440 | AC-DC converter and AC-DC conversion method | Wing Choi Ho, Wai Pong Choi | 2012-10-30 |
| 8301077 | Antenna network for passive and active signal enhancement | Quan Xue, Kwun Chiu Wan | 2012-10-30 |
| 8294418 | Power transfer device and method | Quan Xue, Kwun Chiu Wan | 2012-10-23 |
| 8269456 | Secondary module for battery charging system | — | 2012-09-18 |
| 8125154 | Automatic lamp detection method and optimal operation for fluorescent lamps | Leung Ming Lee | 2012-02-28 |
| 8102235 | Coreless printed-circuit-board (PCB) transformers and operating techniques therefor | Sai Chun Tang | 2012-01-24 |
| 8049301 | Semiconductor transformers | — | 2011-11-01 |
| 8040103 | Battery charging apparatus with planar inductive charging platform | Xun Liu | 2011-10-18 |
| 7872445 | Rechargeable battery powered portable electronic device | — | 2011-01-18 |
| 7768371 | Coreless printed-circuit-board (PCB) transformers and operating techniques therefor | Sai Chun Tang | 2010-08-03 |
| 7521873 | Circuit designs and control techniques for high frequency electronic ballasts for high intensity discharge lamps | Shu Hung Henry Chung | 2009-04-21 |
| 7411359 | Apparatus and method for providing dimming control of lamps and electrical lighting systems | Shu Hung Henry Chung, Ngai-Man Ho | 2008-08-12 |