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. 15, 2014
Filed:
Sep. 17, 2010
Applicants:
Bernhard Hunke, Hennef, DE;
Andrei Tauber, Cologne, DE;
Michael Kraemer, Kuerten, DE;
Guenter Klug, Langenfeld, DE;
Theo Lansing, Leverkusen, DE;
Marco Hafermann, Bergisch Gladbach, DE;
Inventors:
Bernhard Hunke, Hennef, DE;
Andrei Tauber, Cologne, DE;
Michael Kraemer, Kuerten, DE;
Guenter Klug, Langenfeld, DE;
Theo Lansing, Leverkusen, DE;
Marco Hafermann, Bergisch Gladbach, DE;
Assignee:
Blankophor GmbH & Co. KG, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21F 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Concentrated aqueous fluorescent whitening agent preparations are disclosed for optically whitening paper, wherein the preparation contains a specific disulfo-type fluorescent whitening agent.