Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kai Schumacher0
Naruyasu Ishibashi0
Matthias Rochnia0
Takeyoshi Shibasaki0
Ralph Brandes0
Hauke Jacobsen0
Date of Patent
May 26, 2009
0Patent Application Number
110556050
Date Filed
February 11, 2005
0Patent Primary Examiner
Patent abstract
Pyrogenically produced silicon dioxide powder in the form of aggregates of primary particles having a BET surface area of 90±15 m2/g, wherein the aggregates display an average surface area of 10000 to 20000 nm2, an average equivalent circle diameter (ECD) of 90 to 130 nm and an average circumference of 1000 to 1400 nm.
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