(19)

(11)

EP 1 858 615 A2

(12)

(88) Date of publication A3: 02.11.2006 (43) Date of publication: 28.11.2007 Bulletin 2007/48 (21) Application number: 06708100.0 (22) Date of filing: 08.02.2006

(51) International Patent Classification (IPC):  B01D 29/41(2006.01) (86) International application number: PCT/EP2006/050753 (87) International publication number: WO 2006/084858 (17.08.2006 Gazette 2006/33)

(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 (30) Priority: 09.02.2005 IT TN20050003 (71) Applicant: Idrosid S.r.l. 38014 Gardolo di Trento TN (IT)	(72) Inventor: OBEROSLER, Mauro I-38050 Frassilongo (tn) (IT) (74) Representative: Gervasi, Gemma  Notarbartolo & Gervasi S.p.A. Corso di Porta Vittoria, 9 20122 Milano 20122 Milano (IT)