8 Utility Patents
#3,291 in Taipei
#13,521 in Taiwan
#521,303 in the World
Forward Citations = 9
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4. 1 out of 281

5. 1 out of 1
Ching-ray Chang
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#3,291 in Taipei
#13,521 in Taiwan
#521,303 in the World
Company Filing History:



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