(19)

(11)

EP 1 792 012 A2

(12)

(88) Date of publication A3: 13.04.2006 (43) Date of publication: 06.06.2007 Bulletin 2007/23 (21) Application number: 05771628.4 (22) Date of filing: 12.07.2005

(51) International Patent Classification (IPC):  D21H 23/04(2006.01) B01F 5/02(2006.01) (86) International application number: PCT/FI2005/000329 (87) International publication number: WO 2006/008333 (26.01.2006 Gazette 2006/04)

(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 (30) Priority: 16.07.2004 FI 20040990 (71) Applicant: Wetend Technologies Oy 57230 Savonlinna (FI)	(72) Inventor: MATULA, Jouni FI-57600 Savonlinna (FI) (74) Representative: Ansala, Jyrki Matti  AKP Karhula Ltd Intellectual Property Department P.O. Box 18 48601 Kotka 48601 Kotka (FI)