Jing-Chen Chang

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Yun-Lin Hsien, TW

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Patents Grantslast 30 patents

Information Patent Grant
Electric lock
- Patent number 7,516,633
- Issue date Apr 14, 2009
- EZ Trend Technology Co., Ltd.
- Jing-Chen Chang
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Two-handled lock
- Patent number 7,472,571
- Issue date Jan 6, 2009
- EZ Trend Technology Co., Ltd.
- Jing-Chen Chang
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Electric Padlock
- Patent number 6,993,943
- Issue date Feb 7, 2006
- EZ Trend Technology Co., Ltd.
- Jing-Chen Chang
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
Electric door lock
- Publication number 20120036904
- Publication date Feb 16, 2012
- Jing-Chen Chang
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Electric door lock
- Publication number 20070169525
- Publication date Jul 26, 2007
- EZ TREND TECHNOLOGY CO., LTD.
- Jing-Chen Chang
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Electric lock
- Publication number 20070051145
- Publication date Mar 8, 2007
- EZ TREND TECHNOLOGY CO.,LTD
- Jing-Chen Chang
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES