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Edward Chia Kai Tseng
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St. Taoyuan City, TW
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last 30 patents
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Patent Grant
Etching compositions and methods for using same
Patent number
10,400,167
Issue date
Sep 3, 2019
VERSUM MATERIALS US, LLC
Wen Dar Liu
H01 - BASIC ELECTRIC ELEMENTS
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last 30 patents
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Patent Application
Etching Compositions and Methods for Using Same
Publication number
20170145311
Publication date
May 25, 2017
Air Products and Chemicals, Inc.
Wen Dar Liu
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...