IMPROVED RETENTION AND DRAINAGE IN THE MANUFACTURE OF PAPER - Patent 1841916

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EP 1 841 916 A1

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(43)	Date of publication:
	10.10.2007 Bulletin 2007/41

(21)	Application number: 05855567.3

(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/US2005/047032

(87)	International publication number:
	WO 2006/071853 (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:

24.06.2005 US 694057 P
24.06.2005 US 694059 P
21.12.2005 US 313503
29.12.2004 US 640163 P
29.12.2004 US 639897 P
29.12.2004 US 640166 P

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

(72)	Inventors:
	SUTMAN, Frank, J. Jacksonville, Florida 32257-5404 (US) ZHANG, Fushan Jacksonville, Florida 32257-5352 (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