Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...
Reexamination Certificate
2007-05-17
2011-10-11
Zimmer, Marc S (Department: 1765)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From silicon reactant having at least one...
C528S015000, C528S025000, C528S403000, C528S405000, C528S419000
Reexamination Certificate
active
08034891
ABSTRACT:
A novel polyether-modified organopolysiloxane and a novel diorganopolysiloxane-polyether block copolymer are more resistant to oxidation than the heretofore existing polyoxyalkylene-modified organopolysiloxanes and are thus more resistant to producing allergenically antigenic oxidation products during elapsed time in storage. Methods of producing this novel polyether-modified organopolysiloxane and novel diorganopolysiloxane-polyether block copolymer are also provided, as well as cosmetic that the modified organopolysiloxane or diorganopolysiloxane-polyether block copolymer.
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Dow Corning Toray Company, Ltd.
Howard & Howard Attorneys PLLC
Zimmer Marc S
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