Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...
Reexamination Certificate
2011-04-12
2011-04-12
Choi, Ling-Siu (Department: 1763)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From silicon reactant having at least one...
C430S272100, C430S015000
Reexamination Certificate
active
07923524
ABSTRACT:
Provided is a novel silicone copolymer which exhibits high absorption even in a far-ultraviolet region of 200 nm or more, and also is soluble in an alkaline reagent since it has a phenolic hydroxyl group. The silicone copolymer comprises a silsesquioxane having a phenol unit and comprises a silsesquioxane having a condensed polycyclic hydrocarbon.
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Choi Ling-Siu
Knobbe Martens Olson & Bear LLP
Tokyo Ohka Kogyo Co. Ltd.
Wang Chun-Cheng
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