(19)

(11)

EP 2 384 310 A1

(12)

(43) Date of publication: 09.11.2011 Bulletin 2011/45 (21) Application number: 10706762.1 (22) Date of filing: 08.01.2010

(51) International Patent Classification (IPC):  C02F 1/34(2006.01) B01J 19/00(2006.01) B01F 5/06(2006.01) (86) International application number: PCT/IT2010/000003 (87) International publication number: WO 2010/079523 (15.07.2010 Gazette 2010/28)

(84) Designated Contracting States: 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 SE SI SK SM TR (30) Priority: 09.01.2009 IT GE20090001 (71) Applicants: Istituto Nazionale di Ricerca Metrologica (I.N.RI.M.) 10135 Torino (IT) Troia, Adriano 10137 Torino (IT) Madonna Ripa, Daniele Angelo Torino 10123 (IT)	(72) Inventors: TROIA, Adriano I-10137 Torino (IT) MADONNA RIPA, Daniele Angelo I-10123 Torino (IT) SPAGNOLO, Renato I-10135 Torino (IT) (74) Representative: Pennacino, Enrico  Porsia & Associati S.r.l. Via Brigata Liguria 3/16 A 16121 Genova 16121 Genova (IT)