Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11754611 | Electromagnetic interference suppression circuit and related sensing circuit | Peter On Bon Chan | 2023-09-12 |
| 10396656 | Control circuit for suppressing electromagnetic interference signals | Peter On Bon Chan | 2019-08-27 |
| 7567040 | High efficiency driver for color light emitting diodes (LED) | Man Hay Pong, Joe Chui Pong Liu | 2009-07-28 |
| 7368883 | Apparatus for end-of-life detection of fluorescent lamps | Yick Po Chan | 2008-05-06 |
| 7178971 | High efficiency driver for color light emitting diodes (LED) | Man Hay Pong, Joe Chui Pong Liu | 2007-02-20 |
| 7122972 | Dimmable ballast with resistive input and low electromagnetic interference | Man Hay Pong, Joe Liu | 2006-10-17 |
| 6815937 | Stepping inductor for fast transient response of switching converter | Man Hay Pong, Joe Chui Pong Liu | 2004-11-09 |
| 6812679 | High efficiency AC-DC converter with power factor corrector | Joe Chui Pong Liu, Man Hay Pong | 2004-11-02 |
| 6697266 | Method and system for providing a DC voltage with low ripple by overlaying a plurality of AC signals | Man Hay Pong, Joe Chui Pong Liu | 2004-02-24 |
| 6580259 | High efficiency AC-DC converter with power factor corrector | Joe Chui Pong Liu, Man Hay Pong | 2003-06-17 |
| 6188209 | Stepping inductor for fast transient response of switching converter | Man Hay Pong, Joe Chui Pong Liu | 2001-02-13 |
| 6018469 | Low cost high efficiency power converter | — | 2000-01-25 |
| 5995383 | Low cost AC-to-DC converter having input current with reduced harmonics | Robert Chun Fung Lee, Fu-Sheng Tsai, Francis Ho | 1999-11-30 |
| 5880940 | Low cost high efficiency power converter | — | 1999-03-09 |
| 5838145 | Transient load corrector for switching converters | Chi Kong Tse | 1998-11-17 |
| 5774346 | Family of zero voltage switching DC to DC converters with coupled output inductor | Man Hay Pong | 1998-06-30 |
| 5748457 | Family of zero voltage switching DC to DC converters | Man Hay Pong | 1998-05-05 |
| 5657212 | Capacitor coupled converter | Bryan M. H. Pong | 1997-08-12 |
| 5652700 | Low cost AC-to-DC converter having input current with reduced harmonics | Fu-Sheng Tsai, Francis Ho, Robert Chun Fung Lee | 1997-07-29 |
| 5633791 | Double modulation converter | Bryan M. H. Pong | 1997-05-27 |