Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
2005-04-19
2008-11-25
Webb, Gregory E (Department: 1796)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C510S176000, C510S407000, C510S506000
Reexamination Certificate
active
07456141
ABSTRACT:
A photo resist stripper composition includes PGME or its derivatives and ANONE or its derivatives characterized by low toxicity, safe use, free of odors, environment friendly, easy disposal of waste liquid and wastewater; good solution to photo resist material film, proper volatility, excellent stripping capability, good compatibility among different types of photo resist; allowing storage at ambient temperature, low production cost, and not requiring retrofit of the existing equipment.
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Dai Sing-Ru
Hsu Ming-Ann
Kuo Kuang-Lung
Tsai Mu-Lin
Echem Solutions Corp.
Ho Raymond J.
Venable LLP
Webb Gregory E
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