The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 16, 2007
Filed:
Jul. 18, 2003
Applicants:
Günther Michael, Karlstein, DE;
Volker Kasack, Niedergründau, DE;
Rüdiger Nowak, Kahl/Main, DE;
Inventors:
Assignee:
Degussa GmbH, , DE;
Primary Examiner:
Int. Cl.
CPC ...
B01J 2/30 (2006.01); C01B 33/145 (2006.01); C01B 33/159 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods of making hydrophobic, pyrogenically produced silica having a tamped density, of 55 to 200 g/l. Said silica is produced by hydrophobizing pyrogenically produced silica by reaction with a halogen free silane and then compacting it with means consisting of a roller compactor or a belt filter press. The silica may be used for the production of dispersions.