(19)

(11)

EP 2 536 478 A1

(12)

(43) Date of publication: 26.12.2012 Bulletin 2012/52 (21) Application number: 11702453.9 (22) Date of filing: 04.02.2011

(51) International Patent Classification (IPC):  B01D 35/143(2006.01) (86) International application number: PCT/EP2011/051683 (87) International publication number: WO 2011/101265 (25.08.2011 Gazette 2011/34)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 17.02.2010 IT PD20100044 (71) Applicant: Laica S.p.A. 36021 Barbarano Vicentino (IT)	(72) Inventor: MAURIZIO, Moretto I-36100 Vicenza (IT) (74) Representative: Locas, Davide et al Cantaluppi & Partners Piazzetta Cappellato Pedrocchi, 18 35122 Padova 35122 Padova (IT)