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:
Dec. 17, 2013
Filed:
Jun. 10, 2009
Applicants:
Bernhard Hunke, Hennef, DE;
Michael Kraemer, Kürten, DE;
Andrei Tauber, Köln, DE;
Günter Klug, Langenfeld, DE;
Inventors:
Bernhard Hunke, Hennef, DE;
Michael Kraemer, Kürten, DE;
Andrei Tauber, Köln, DE;
Günter Klug, Langenfeld, DE;
Assignee:
Blankophor GmbH & Co. KG, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21H 17/07 (2006.01); D21H 17/09 (2006.01); D21H 21/30 (2006.01); D21H 23/04 (2006.01); D21H 23/22 (2006.01); C07D 403/00 (2006.01); C07D 403/12 (2006.01); C09K 11/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A composition suitable for paper brightening, wherein the composition contains one or more specified fluorescent whitening agents with taurine groups. The composition is used for whitening paper, in particular at the wet-end, in the size press or by coating.