Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2006-06-27
2011-10-11
Seidleck, James J (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C528S310000, C528S322000, C528S026000, C528S027000
Reexamination Certificate
active
08034893
ABSTRACT:
A resin solution composition comprising (A) a polyamic acid resin, (B) an alkoxysilyl-containing polyamic acid resin, and (C) an organic solvent cures into a product that has good substrate adhesion and heat resistance and is effective in forming a protective film on a semiconductor device prior to encapsulation with epoxy resin molding material (molding compound) in that it overcomes the chip cracking and thermal deterioration problems of semiconductor packages by thermal stress.
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Akiba Hideki
Shiobara Toshio
Birch & Stewart Kolasch & Birch, LLP
Listvoyb Gregory
Seidleck James J
Shin-Etsu Chemical Co. , Ltd.
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