Chemistry of inorganic compounds – Silicon or compound thereof – Oxygen containing
Reexamination Certificate
2003-07-29
2010-11-02
Silverman, Stanley (Department: 1793)
Chemistry of inorganic compounds
Silicon or compound thereof
Oxygen containing
C423S336000, C423S337000, C427S219000
Reexamination Certificate
active
07824643
ABSTRACT:
Stable, aqueous dispersion containing silicon dioxide powder having a hydroxyl group density of 2.5 to 4.7 OH
m2, which is obtained from a silicon dioxide powder produced by a flame hydrolysis process under acid conditions. The dispersion is produced by incorporating the silicon dioxide powder into an aqueous solution by means of a dispersing device. The dispersion can be used to produce glass articles.
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Oswald Monika
Schumacher Kai
Evonik Degussa GmbH
Liao Diana J
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Silverman Stanley
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