Chia-Hung Chiu

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Bangiao City, TW

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Patents Grantslast 30 patents

Information Patent Grant
Piezoelectric ceramic loudspeaker headphone structure
- Patent number 8,494,188
- Issue date Jul 23, 2013
- Abatech Electronics Co., Ltd.
- Hsiang-Chih Yu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
PIEZOELECTRIC CERAMIC LOUDSPEAKER HEADPHONE STRUCTURE
- Publication number 20120170786
- Publication date Jul 5, 2012
- Hsiang-Chih Yu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE