CONTROLLED ADDITION OF CO2 IN THE WET END OF THE PAPERMAKING PROCESS - Patent 1639199

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EP 1 639 199 A1

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(43)	Date of publication:
	29.03.2006 Bulletin 2006/13

(21)	Application number: 04736675.2

(22)	Date of filing: 11.06.2004

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International Patent Classification (IPC):

D21H 23/08^(1990.01)

(86)	International application number:
	PCT/IB2004/001950

(87)	International publication number:
	WO 2004/113614 (29.12.2004 Gazette 2004/53)

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

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Priority:

18.06.2003 US 479284 P
18.06.2003 US 479285 P
10.06.2004 US 865236

(71)	Applicant: L'air liquide, Société anonyme à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés G. Claude
	75321 Paris Cedex 07 (FR)

(72)	Inventors:
	SAUCEDO, Victor, M. Willowbrook, IL 60527 (US) DUARTE, Daniel Clarendon Hills, IL 60514 (US)

(74)	Representative: Conan, Philippe Claude et al
	L'Air Liquide D.S.P.I. 75, quai d'Orsay 75321 Paris Cedex 07 75321 Paris Cedex 07 (FR)

(54)	CONTROLLED ADDITION OF CO2 IN THE WET END OF THE PAPERMAKING PROCESS