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Ying-Ko Chen, TW
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Patents Grants
last 30 patents
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Patent Grant
Piezoelectric buzzer
Patent number
7,728,716
Issue date
Jun 1, 2010
China Steel Corporation
Cheng-Sheng Yu
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Patents Applications
last 30 patents
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Patent Application
METHOD FOR FABRICATING PIEZOELECTRIC COMPOSITE MATERIAL AND PIEZOEL...
Publication number
20130285510
Publication date
Oct 31, 2013
BETACER INC.
Wu-Sung CHUANG
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Patent Application
Piezoelectric buzzer
Publication number
20090033473
Publication date
Feb 5, 2009
China Steel Corporation
Cheng-Sheng Yu
G10 - MUSICAL INSTRUMENTS ACOUSTICS