Chemistry of inorganic compounds – Silicon or compound thereof – Oxygen containing
Reexamination Certificate
2011-01-18
2011-01-18
Nguyen, Ngoc-Yen M (Department: 1754)
Chemistry of inorganic compounds
Silicon or compound thereof
Oxygen containing
C423S338000, C423S339000, C424S049000, C424S401000, C502S232000, C502S439000, C106S286800, C106S287340
Reexamination Certificate
active
07871588
ABSTRACT:
Precipitated silica or silicates, obtainable by acid precipitation of aqueous silicate solutions while maintaining a constant alkali number of at least 1.
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Drexel Claus-Peter
Kuhlmann Robert
Lindner Gottlieb-Georg
Evonik Degussa GmbH
Nguyen Ngoc-Yen M
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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