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:
Aug. 21, 2007
Filed:
Apr. 16, 2003
Applicants:
Karl-heinz Drenker, 42655 Solingen, DE;
Heinz Giesecke, 51519 Odenthal, DE;
Bernhard Hunke, 53783 Eitorf, DE;
Bernd Hauschel, 51373 Leverkusen, DE;
Reiner Gottschalk, 51065 Köln, DE;
Claudia Hundertmark, 50126 Bergheim, DE;
Inventors:
Karl-Heinz Drenker, 42655 Solingen, DE;
Heinz Giesecke, 51519 Odenthal, DE;
Bernhard Hunke, 53783 Eitorf, DE;
Bernd Hauschel, 51373 Leverkusen, DE;
Reiner Gottschalk, 51065 Köln, DE;
Claudia Hundertmark, 50126 Bergheim, DE;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 21/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
The use of optical brighteners of the formula (II): in which and the other substituents have the meaning stated in the description, for brightening aqueous coating slips comprising at least one latex binder and at least one synthetic co-binder differing therefrom.