(19)

(11)

EP 2 600 956 A2

(12)

(88) Date of publication A3: 29.03.2012 (43) Date of publication: 12.06.2013 Bulletin 2013/24 (21) Application number: 11764295.9 (22) Date of filing: 05.08.2011

(51) International Patent Classification (IPC):  B01D 17/02(2006.01) C02F 1/24(2006.01) B03D 1/14(2006.01) (86) International application number: PCT/IB2011/053517 (87) International publication number: WO 2012/017422 (09.02.2012 Gazette 2012/06)

(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: 05.08.2010 IT BO20100511 (71) Applicant: WAM Industriale S.p.A. Modena (IT)	(72) Inventors: D'ANIELLO, Massimo I-42014 Roteglia di Castellarano (IT) MARCHESINI, Vainer I-41030 San Prospero (IT) (74) Representative: Boggio, Luigi et al Studio Torta S.p.A. Via Viotti, 9 10121 Torino 10121 Torino (IT)