Composition and process for whitening paper

United States of America Patent

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Jan 15, 2013
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Jun 2, 2011
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Jun 10, 2009
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Jun 11, 2008

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Abstract

A composition suitable for surface treatment of paper, wherein the composition contains a specified fluorescent whitening agent with alkylsulfonic acid groups, a salt of a bivalent cation, and a carrier. The composition is used for whitening paper, in particular in the size press.

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BLANKOPHOR GMBH & CO KG	49577 ANKUM

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Inventor Name	Address	# of filed Patents	Total Citations
Hunke, Bernhard	Hennef, DE	13	66
Klug, Günter	Langenfeld, DE	3	2
Kraemer, Michael	Kürten, DE	51	1634
Tauber, Andrei	Köln, DE	10	34

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Composition and process for whitening paper

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United States of America Patent

12997044

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PATENT NO	8354041
APP PUB NO	20110126996A1
SERIAL NO	12997044
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
January 15, 2013	US,8354041,B2 US8354041B2	GRANTED PATENT AS SECOND PUBLICATION
June 02, 2011	US,20110126996,A1 US20110126996A1	FIRST PUBLISHED PATENT APPLICATION

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12997044

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