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:
Sep. 16, 2014
Filed:
Oct. 16, 2007
Ulrich Fischer, Moembris, DE;
Philipp Wieland, Munich, DE;
Christian Huebsch, Gmund, DE;
Harald Grassl, Feichten an der Alz, DE;
Kerstin Becher, Waldhausen, DE;
Stefanie Scheul, Trostberg, DE;
Eva Jetzlsperger, Unterneukirchen, DE;
Ulrich Fischer, Moembris, DE;
Philipp Wieland, Munich, DE;
Christian Huebsch, Gmund, DE;
Harald Grassl, Feichten an der Alz, DE;
Kerstin Becher, Waldhausen, DE;
Stefanie Scheul, Trostberg, DE;
Eva Jetzlsperger, Unterneukirchen, DE;
Evonik Degussa GmbH, Essen, DE;
Construction Research & Technology GmbH, Trostberg, DE;
Abstract
Dispersion which is free of binders and which contains silica and at least one superplasticizer, the silica being a precipitated silica having a surface area greater than 50 m/g, the aggregates and/or agglomerates in the dispersion having a median diameter of less than 1 μm and the proportion of silica being from 5 to 50% by weight, based on the total amount of the dispersion, and a process for the preparation thereof and the use thereof as a concrete admixture in cement-containing preparations.