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. 05, 2011
Filed:
Aug. 28, 2007
Wolfgang Lortz, Waechtersbach, DE;
Gabriele Perlet, Groβkrotzenburg, DE;
Werner Will, Gelnhausen, DE;
Kai Schumacher, Hofheim, DE;
Wolfgang Lortz, Waechtersbach, DE;
Gabriele Perlet, Groβkrotzenburg, DE;
Werner Will, Gelnhausen, DE;
Kai Schumacher, Hofheim, DE;
Evonik Degussa GmbH, Essen, DE;
Abstract
Dispersion comprising water and mixed potassium silicon oxide powder, where—the mixed oxide powder is in the form of aggregates of primary particles, has a BET surface area of 100 to 400 m/g, has an average aggregate diameter in the dispersion of less than 100 nm, and possesses a potassium fraction of 0.05% to 1.5% by weight, calculated as KO and based on the mixed oxide powder, and—the dispersion has a fraction of mixed oxide powder in the dispersion of 25% to 40% by weight, the sum of water and mixed oxide powder is at least 98% by weight and the pH is 9 to 11.5.