Inventor
Da Feng Weng
Inventor
Yorktown Heights, NY, US
Overview
Patents· 16 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Mprimary
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems38%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications31%
H05BElectric heating22%
H02HEmergency protective circuit arrangements3%
Y02PClimate change mitigation technologies in the production or processing of goods3%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%
PatentTitleYear
8,829,802'LED dimming control scheme'20148,629,670'Switching adapter control method for adaptive mobile power systems'20148,558,528'High accuracy inductor peak current control scheme for switching power supply'20138,350,551'Power-supply controller'20137,439,721'Constant-on-time power-supply controller and related system and method'20087,250,744'Quasi average current mode control scheme for switching power converter'20076,909,622'Quasi active power factor correction circuit for switching power supply'20056,518,712'Method and apparatus for controlling the operation of a lamp'20036,496,012'Apparatus and method for detecting a short circuit in a lighting system'20026,473,318'Leakage energy recovering system and method for flyback converter'20026,356,035'Deep PWM dimmable voltage-fed resonant push-pull inverter circuit for LCD backlighting with a coupled inductor'20026,317,347'Voltage feed push-pull resonant inverter for LCD backlighting'20016,314,002'Voltage clamping system and method for a DC/DC power converter'20016,239,995'Resonant-boost-input three-phase power factor corrector with a low current stress on switches'20016,034,489'Electronic ballast circuit'20005,986,901'Power factor correction circuit for a power supply'1999Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1999–2000Patents assigned to MATSUSHITA ELECTRIC WORKS R & (2)· patent assignee history
1999–2003Based in Winchester, MA, US· patent location history
2001–2002Patents assigned to PHILIPS ELECTRONICS NA (3)· patent assignee history
2001–2002Based in Yorktown Heights, NY, US· patent location history
2002Patents assigned to KONINKL PHILIPS ELECTRONICS NV (2)· patent assignee history
2005–2008Based in Cupertino, CA, US· patent location history
2007–2014Patents assigned to WENG DA FENG (5)· patent assignee history
2013–2014Based in Sunnyvale, CA, US· patent location history
2014Patents assigned to WEI QI CUI (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| WENG DA FENGself | 5 | 2007–2014 |
| PHILIPS ELECTRONICS NA | 3 | 2001–2002 |
| KONINKL PHILIPS ELECTRONICS NV | 2 | 2002 |
| MATSUSHITA ELECTRIC WORKS R & | 2 | 1999–2000 |
| WEI QI CUI | 2 | 2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yorktown Heights, New York, US | 6 | 2001–2002 |
| Sunnyvale, California, US | 4 | 2013–2014 |
| Cupertino, California, US | 3 | 2005–2008 |
| Winchester, Massachusetts, US | 3 | 1999–2003 |