Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From ketone or ketene reactant
Reexamination Certificate
2008-12-23
2010-10-12
Mullis, Jeffrey C (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From ketone or ketene reactant
C528S224000, C528S227000, C528S125000, C528S126000
Reexamination Certificate
active
07812109
ABSTRACT:
A resin is based on ketones and aldehydes and is prepared in methanol or ethanol in the presence of a phase transfer catalyst. The resin features a very broad solubility and low intrinsic color.
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Burian Bettina
Denkinger Peter
Gloeckner Patrick
Mindach Lutz
Wesselbaum Franz-Josef
Evonik Degussa GmbH
Mullis Jeffrey C
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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