IMPROVED RETENTION AND DRAINAGE IN THE MANUFACTURE OF PAPER - Patent 1844193

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EP 1 844 193 A1

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(43)	Date of publication:
	17.10.2007 Bulletin 2007/42

(21)	Application number: 05854764.7

(22)	Date of filing: 22.12.2005

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International Patent Classification (IPC):

D21H 21/10^(2006.01)

(86)	International application number:
	PCT/US2005/046104

(87)	International publication number:
	WO 2006/071633 (06.07.2006 Gazette 2006/27)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

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Priority:

29.12.2004 US 640167 P
21.12.2005 US 313506

(71)	Applicant: HERCULES INCORPORATED
	Wilmington, DE 19894-0001 (US)

(72)	Inventors:
	HARRINGTON, John, C. Jacksonville, Florida 32257-8022 (US) SUTMAN, Frank, J. Jacksonville, Florida 32257-5404 (US) GELMAN, Robert, A. Newark, Delaware 19711 (US)

(74)	Representative: HOFFMANN EITLE
	Patent- und Rechtsanwälte Arabellastrasse 4 81925 München 81925 München (DE)

(54)	IMPROVED RETENTION AND DRAINAGE IN THE MANUFACTURE OF PAPER