(19)

(11)

EP 2 122 262 A1

(12)

(43) Date of publication: 25.11.2009 Bulletin 2009/48 (21) Application number: 07709457.1 (22) Date of filing: 05.02.2007

(51) International Patent Classification (IPC):  F24F 3/16(2006.01) F24F 13/28(2006.01) B01D 46/24(2006.01) (86) International application number: PCT/SE2007/050064 (87) International publication number: WO 2008/097144 (14.08.2008 Gazette 2008/33)

(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 (71) Applicant: CAMFIL AB 619 33 Trosa (SE)	(72) Inventor: LANCIEUX, Cédric F-60280 Margny-les- Compiegne (FR) (74) Representative: Hyltner, Jan-Olof  Albihns AB P.O. Box 5581 114 85 Stockholm 114 85 Stockholm (SE)