Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10848003 | Wireless power transfer system | Wai Man Ng, Cheng Zhang, Deyan Lin | 2020-11-24 |
| 10566133 | Apparatus and method for wireless power transfer | Wenxing Zhong | 2020-02-18 |
| 10250072 | Wireless power transfer system | Wai Man Ng, Cheng Zhang, Deyan Lin | 2019-04-02 |
| 9717120 | Apparatus and methods of operation of passive LED lighting equipment | Wu Chen | 2017-07-25 |
| 9713212 | Current mirror circuit and method | Sinan Li | 2017-07-18 |
| 9287344 | Monolithic magnetic induction device | Johnny Kin On Sin, Rongxiang Wu | 2016-03-15 |
| RE45651 | Electronic control method for a planar inductive battery charging apparatus | Wing Choi Ho, Chi Kwan Lee, Shu Hung Henry Chung | 2015-08-11 |
| 8952617 | Passive LC ballast and method of manufacturing a passive LC ballast | Wai Man Ng, Deyan Lin | 2015-02-10 |
| 8942018 | Single-phase self-driven full-bridge synchronous rectification | Wing Choi Ho, Xun Liu | 2015-01-27 |
| 8897640 | Digital subcarrier optical network utilizing digital subcarrier cross-connects with increased energy efficiency | Andrea Fumagalli | 2014-11-25 |
| 8711593 | Generalized AC-DC synchronous rectification techniques for single- and multi-phase systems | Wing Choi Ho, Xun Liu, Wai Pong Choi | 2014-04-29 |
| 8639116 | Digital subcarrier optical network utilizing digital subcarrier cross-connects with increased energy efficiency | Andrea Fumagalli | 2014-01-28 |
| 8482214 | Apparatus and methods of operation of passive LED lighting equipment | — | 2013-07-09 |
| 8228025 | Electronic control method for a planar inductive battery charging apparatus | Wing Choi Ho, Chi Kwan Lee, Shu Hung Henry Chung | 2012-07-24 |
| 8120445 | Planar EMI filter comprising coreless spiral planar windings | Xun Liu, Chi Kwan Lee | 2012-02-21 |
| 8086434 | Methods for optimal operation of light emitting diodes | — | 2011-12-27 |
| 7915858 | Localized charging, load identification and bi-directional communication methods for a planar inductive battery charging system | Xun Liu, Wing Choi Ho, Wing Cheong Chan | 2011-03-29 |
| 7495414 | Rechargeable battery circuit and structure for compatibility with a planar inductive charging platform | — | 2009-02-24 |
| 7304439 | Phase-controlled dimmable electronic ballasts for fluorescent lamps with very wide dimming range | Pak-Chuen Tang, Yiu Lam, Shu Hung Henry Chung | 2007-12-04 |
| 6888438 | Planar printed circuit-board transformers with effective electromagnetic interference (EMI) shielding | Sai Chun Tang | 2005-05-03 |
| 6647176 | Method and apparatus to compensate for polarization mode dispersion | Hok Yong Pua, Chris Allen, Ken Demarest, Kumar Vijay Peddanarappagari | 2003-11-11 |
| 6545431 | Dimmable electronic ballast | Henry Chung, Eric Ho, Stephen Tsz-sek Lee | 2003-04-08 |
| 6501364 | Planar printed-circuit-board transformers with effective electromagnetic interference (EMI) shielding | Sai Chun Tang | 2002-12-31 |
| 6459830 | Method and apparatus to compensate for polarization mode dispersion | Hok Yong Pua, Chris Allen, Ken Demarest, Kumar Vijay Peddanarappagari | 2002-10-01 |
| 6414449 | Universal electronic ballast | Leung Ming Lee | 2002-07-02 |