Pak Chuen Tang

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Kowloon, HK

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Patents Grantslast 30 patents

Information Patent Grant
Phase-controlled dimmable electronic ballasts for fluorescent lamps...
- Patent number 7,304,439
- Issue date Dec 4, 2007
- E. Energy Technology Limited
- Pak Chuen Tang
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
PHASE-CONTROLLED DIMMABLE ELECTRONIC BALLASTS FOR FLUORESCENT LAMPS...
- Publication number 20080030148
- Publication date Feb 7, 2008
- E.Energy Technology Limited
- Pak Chuen TANG
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
Phase-controlled dimmable electronic ballasts for fluorescent lamps...
- Publication number 20030080696
- Publication date May 1, 2003
- Pak Chuen Tang
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR