(19)

(11)

EP 0 813 450 A1

(12)

(43) Date of publication: 29.12.1997 Bulletin 1997/52 (21) Application number: 96904112.0 (22) Date of filing: 04.03.1996

(51) International Patent Classification (IPC):  B01F 5/ 06( . ) B03D 1/ 24( . ) (86) International application number: PCT/FI1996/000128 (87) International publication number: WO 1996/028254 (19.09.1996 Gazette 1996/42)

(84) Designated Contracting States: DE ES FI FR PT (30) Priority: 10.03.1995 FI 19950001114 (71) Applicant: Ahlström Aquaflow OY 57101 Savonlinna (FI)	(72) Inventor: KORHONEN, Pekka FIN-53850 Lappeenranta (FI) (74) Representative: Görg, Klaus, Dipl.-Ing., et al  Hoffmann Eitle, Patent- und Rechtsanwälte, Arabellastrasse 4 81925 München 81925 München (DE)