Chemistry of inorganic compounds – Silicon or compound thereof – Oxygen containing
Reexamination Certificate
2006-08-29
2006-08-29
Nguyen, Ngoc-Yen (Department: 1754)
Chemistry of inorganic compounds
Silicon or compound thereof
Oxygen containing
C423S327100, C423S328100, C423S328200, C423S330100, C423S331000, C502S439000, C106S287100
Reexamination Certificate
active
07097818
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
Degussa - AG
Nguyen Ngoc-Yen
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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