DaFeng Weng

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San Jose, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
High efficiency driver apparatus for driving a cold cathode fluores...
- Patent number 6,630,797
- Issue date Oct 7, 2003
- Koninklijke Philips Electronics N.V.
- Jinrong Qian
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Single power stage AC/DC forward converter with power switch voltag...
- Patent number 6,519,164
- Issue date Feb 11, 2003
- Koninklijke Philips Electronics N.V.
- DaFeng Weng
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
High efficiency DC-DC power converter
- Patent number 6,487,094
- Issue date Nov 26, 2002
- Koninklijke Philips Electronics N.V.
- DaFeng Weng
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
High efficiency DC-DC power converter with turn-off snubber
- Patent number 6,477,064
- Issue date Nov 5, 2002
- Koninklijke Philips Electronics N.V.
- DaFeng Weng
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Push-pull based voltage-clamping electronic ballast
- Patent number 6,417,629
- Issue date Jul 9, 2002
- Koninklijke Philips Electronics N.V.
- Jinrong Qian
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
High efficiency driver apparatus for driving a cold cathode fluores...
- Publication number 20020195971
- Publication date Dec 26, 2002
- PHILIPS ELECTRONICS NORTH AMERICA CORPORATION
- Jinrong Qian
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
PUSH-PULL BASED VOLTAGE-CLAMPING ELECTRONIC BALLAST
- Publication number 20020067140
- Publication date Jun 6, 2002
- Jinrong Qian
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...