Chao Hong Du

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Guangdong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Lamp base assembly with electronic ballast for energy-saving lamp
- Patent number 7,755,265
- Issue date Jul 13, 2010
- OSRAM Gesellschaft mit beschraenkter Haftung
- Lai Qian Cen
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
INTEGRATED DIMMABLE COMPACT FLUORESCENCE LAMP AND CIRCUIT USED THEREIN
- Publication number 20100148685
- Publication date Jun 17, 2010
- OSRAM Gesellschaft mit beschraenkter Haftung
- Chao Hong Du
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Lamp Base Assembly With Electronic Ballast for Energy-Saving Lamp
- Publication number 20070253166
- Publication date Nov 1, 2007
- Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
- Lai Qian Cen
- H01 - BASIC ELECTRIC ELEMENTS