(19)

(11)

EP 1 789 596 A1

(12)

(43) Date of publication: 30.05.2007 Bulletin 2007/22 (21) Application number: 05768058.9 (22) Date of filing: 27.07.2005

(51) International Patent Classification (IPC):  C14C 15/00(2006.01) (86) International application number: PCT/IB2005/002236 (87) International publication number: WO 2006/013442 (09.02.2006 Gazette 2006/06)

(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: 27.07.2004 IT VI20040189 (71) Applicant: Erretre S.p.A. 36071 Arzignano (Vicenza) (IT)	(72) Inventor: GALIOTTO, Ruggero I-36072 Chiampo (IT) (74) Representative: Vannini, Mario  Maroscia & Associati S.r.l. Contrà S. Caterina, 29 36100 Vicenza 36100 Vicenza (IT)