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:
Apr. 24, 2012
Filed:
May. 06, 2008
Applicants:
Juergen Meyer, Stockstadt, DE;
Kurt Spitznagel, Hanau, DE;
Guenther Michael, Karlstein, DE;
Tina Gross, Steinau, DE;
Inventors:
Juergen Meyer, Stockstadt, DE;
Kurt Spitznagel, Hanau, DE;
Guenther Michael, Karlstein, DE;
Tina Gross, Steinau, DE;
Assignee:
Evonik Degussa GmbH, Essen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B 14/00 (2006.01); C09C 1/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a hydrophobic fumed silica which is obtained by grinding a fumed silica which, as a result of silanization, has trimethylsilyl groups fixed on the surface; and to coating formulations comprising this silica.