Issued Patents All Time
Showing 26–50 of 55 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9991790 | Current control circuit | Kuen Faat Yuen, Wing To Fan | 2018-06-05 |
| 9912247 | DC link module for reducing DC link capacitance | Huai-Te Wang | 2018-03-06 |
| 9743472 | Electrical load driving apparatus | Ruihong Zhang | 2017-08-22 |
| 9698672 | Input filter for a power electronic system | Kuen Faat Yuen, Wing To Fan | 2017-07-04 |
| 9622306 | LED lighting circuit | Rui Zhang | 2017-04-11 |
| 9559336 | Facilitating improved luminance uniformity in organic light emitting diode device panels | Wei Yan | 2017-01-31 |
| 9515487 | Power flow control apparatus | Sui Pung Cheung | 2016-12-06 |
| 9450404 | Current distribution apparatus | — | 2016-09-20 |
| 9414462 | Inductive power transfer for driving multiple organic light emitting diode panels | Rui Zhou, Rui Zhang | 2016-08-09 |
| 9282621 | Energy-recycling burn-in apparatus and method of burn-in for electronic ballasts | Nan Chen | 2016-03-08 |
| 9257893 | USB power supply | Chung-Fai Tse, Yau Chung John Chan | 2016-02-09 |
| 9237288 | Signal modulating interface for a solid state electronic device | Jiangjing Wang | 2016-01-12 |
| 9192003 | Electrical load driving apparatus | Ruihong Zhang | 2015-11-17 |
| D738319 | Light sensor | Tsz Kit Lau, Hoi Ling Wong, Sin Yu Yeung, Hoi Sing Siu, Sui Pung Cheung | 2015-09-08 |
| RE45651 | Electronic control method for a planar inductive battery charging apparatus | Wing Choi Ho, Chi Kwan Lee, Ron Shu Yuen Hui | 2015-08-11 |
| 8680870 | Energy-recycling burn-in apparatus for electronic ballasts and a method of burning-in electronic ballasts | Nan Chen | 2014-03-25 |
| 8575856 | Driver circuit for powering a DC lamp in a non-DC lamp fitting | Nan Chen | 2013-11-05 |
| 8264270 | Method and apparatus to provide active cancellation of the effects of the parasitic elements in capacitors | Wai To Yan | 2012-09-11 |
| 8228025 | Electronic control method for a planar inductive battery charging apparatus | Wing Choi Ho, Chi Kwan Lee, Ron Shu Yuen Hui | 2012-07-24 |
| 8189351 | Multi-input DC/DC converters with zero-current switching | Siu Wai Leung, Kee Ming Chan | 2012-05-29 |
| 8169201 | Output compensator for a regulator | Wai To Yan | 2012-05-01 |
| 8115537 | Method and apparatus for suppressing noise caused by parasitic capacitance and/or resistance in an electronic circuit or system | Wai To Yan | 2012-02-14 |
| 8107268 | Passive lossless snubber cell for a power converter | Tin Ho Li | 2012-01-31 |
| 7521873 | Circuit designs and control techniques for high frequency electronic ballasts for high intensity discharge lamps | Shu Yuen Ron Hui | 2009-04-21 |
| 7411359 | Apparatus and method for providing dimming control of lamps and electrical lighting systems | Ngai-Man Ho, Shu Yuen Ron Hui | 2008-08-12 |