Kuo-Chang Chang

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Taipei Hsieng, TW

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Patents Grantslast 30 patents

Information Patent Grant
UV LED curing appartus with improved illumination and timer control
- Patent number 8,312,641
- Issue date Nov 20, 2012
- Cosmex Co., Ltd.
- Yu-Jen Li
- A45 - HAND OR TRAVELLING ARTICLES
Information Patent Grant
Fingernail polish curing lamp
- Patent number D637352
- Issue date May 3, 2011
- Cosmex Co., Ltd.
- Yu-Jen Li
- D28 - Cosmetic products and toilet articles

Patents Applicationslast 30 patents

Information Patent Application
UV LED CURING APPARTUS WITH IMPROVED ILLUMINATION AND TIMER CONTROL
- Publication number 20110252661
- Publication date Oct 20, 2011
- COSMEX CO., LTD
- Yu-Jen Li
- A45 - HAND OR TRAVELLING ARTICLES