Hung-Cheng Tsai

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Chia-Yi City, TW

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Patents Grantslast 30 patents

Information Patent Grant
Electric door lock with a coupling mechanism for selective engageme...
- Patent number 6,807,834
- Issue date Oct 26, 2004
- EZ Trend Technology Co, Ltd.
- Hung-Cheng Tsai
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Electric padlock
- Patent number 6,761,051
- Issue date Jul 13, 2004
- EZ Trend Technology Co., Ltd.
- Hung-Cheng Tsai
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
Alarm device for pickproofing a lock member
- Publication number 20050179556
- Publication date Aug 18, 2005
- EZ TREND TECHNOLOGY CO., LTD.
- Hung-Cheng Tsai
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Door lock
- Publication number 20050156441
- Publication date Jul 21, 2005
- EZ TREND TECHNOLOGY CO., LTD.
- Hung-Cheng Tsai
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Electric door lock with a coupling mechanism for selective engageme...
- Publication number 20040177660
- Publication date Sep 16, 2004
- Hung-Cheng Tsai
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES