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Echem Hightech Co., Ltd.
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Hsin-Chu Hsien, TW
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Patents Grants
last 30 patents
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Patent Grant
Pyrimidine spirobifluorene oligomer for organic light-emitting device
Patent number
6,872,824
Issue date
Mar 29, 2005
Echem Hightech Co., Ltd.
Ken Tsung Wong
C07 - ORGANIC CHEMISTRY
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Patent Application
Derivatives of tiacumicin B as anti-cancer agents
Publication number
20090110718
Publication date
Apr 30, 2009
Echem Hightech Co., Ltd.
Mei-Chiao Wu
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE