(19)

(11)

EP 2 315 689 A2

(12)

(88) Date of publication A3: 08.07.2010 (43) Date of publication: 04.05.2011 Bulletin 2011/18 (21) Application number: 09806114.6 (22) Date of filing: 25.08.2009

(51) International Patent Classification (IPC):  B61L 1/20(2006.01) B61L 1/18(2006.01) (86) International application number: PCT/IB2009/006664 (87) International publication number: WO 2010/023543 (04.03.2010 Gazette 2010/09)

(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 Designated Extension States: AL BA RS (30) Priority: 28.08.2008 IT MI20081548 (71) Applicant: Sirti S.p.A. 20127 Milano (IT)	(72) Inventors: MORELLI, Maurizio 16138 Genova (IT) TRENTINI, Daniele 16149 Genova (IT) (74) Representative: Di Gennaro, Sergio  Brazanò & Zanardo Milano S.p.A. Corso Vittorio Emanuele II, 61 10128 Torino 10128 Torino (IT)