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:
Jul. 01, 2014
Filed:
Apr. 01, 2010
Applicants:
Roland Wursche, Duelmen, DE;
Goetz Baumgarten, Haltern am See, DE;
Wolfgang Lortz, Waechtersbach, DE;
Michael Kroell, Linsengericht, DE;
Inventors:
Roland Wursche, Duelmen, DE;
Goetz Baumgarten, Haltern am See, DE;
Wolfgang Lortz, Waechtersbach, DE;
Michael Kroell, Linsengericht, DE;
Assignee:
Evonik Degussa GmbH, Essen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 61/14 (2006.01); B01D 65/02 (2006.01); B01D 33/15 (2006.01); B01D 63/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of fractionating a dispersion of oxidic nanoparticles wherein at least one step of the method is a membrane crossflow filtration step, the flow of the dispersion over the membrane being brought about by means of driven rotating parts; and dispersions of oxidic nanoparticles that are obtainable by the method.