21 Utility and 2 Design Patents
#44 in Taoyuan County
#4,292 in Taiwan
#157,673 in the World
rank by utility patentsForward Citations = 324
Company Filing History:

Epistar Corporation
Other
4. 1 out of 1
Paitrix Co. Ltd.
5. 1 out of 1
Chao-chin Chang
where one patent can have more than one assignee
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