Tjong-Ren Chang

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Hsin-Chu, TW

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Patents Grantslast 30 patents

Information Patent Grant
Discharge lamp and production method thereof
- Patent number 7,969,083
- Issue date Jun 28, 2011
- Wellypower Optronics Corporation
- Tjong-Ren Chang
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Fabrication method of discharge lamp
- Patent number 7,946,900
- Issue date May 24, 2011
- Wellypower Optronics Corporation
- Tjong-Ren Chang
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of forming an external electrode fluorescent lamp, thick fil...
- Patent number 7,677,945
- Issue date Mar 16, 2010
- E. I. Du Pont de Nemours and Company
- Joel Skutsky
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
LED LAMP AND MANUFACTURING METHOD THEREOF
- Publication number 20120228652
- Publication date Sep 13, 2012
- WELLYPOWER OPTRONICS CORPORATION
- Tjong-Ren CHANG
- F21 - LIGHTING
Information Patent Application
LAMP CONNECTION DEVICE
- Publication number 20120190253
- Publication date Jul 26, 2012
- Tjong-Ren CHANG
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
TUBE BENDING APPARATUS
- Publication number 20110283741
- Publication date Nov 24, 2011
- Tjong-Ren Chang
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
DISCHARGE LAMP AND PRODUCTION METHOD THEREOF
- Publication number 20100052508
- Publication date Mar 4, 2010
- WELLYPOWER OPTRONICS CORPORATION
- Tjong-Ren Chang
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
FABRICATION METHOD OF DISCHARGE LAMP
- Publication number 20100029166
- Publication date Feb 4, 2010
- WELLYPOWER OPTRONICS CORPORATION
- Tjong-Ren Chang
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Method of forming an external electrode fluorescent lamp, thick fil...
- Publication number 20080030654
- Publication date Feb 7, 2008
- E.I. DuPont de Nemours and Company
- Joel Slutsky
- H01 - BASIC ELECTRIC ELEMENTS