(19)

(11)

EP 1 756 334 A2

(12)

(43) Date of publication: 28.02.2007 Bulletin 2007/09 (21) Application number: 05746937.1 (22) Date of filing: 25.05.2005

(51) International Patent Classification (IPC):  C25C 1/00(2006.01) (86) International application number: PCT/IB2005/051718 (87) International publication number: WO 2005/118916 (15.12.2005 Gazette 2005/50)

(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 MC NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR LV MK YU (30) Priority: 03.06.2004 WO PCT/IB2004/001900 (71) Applicant: MOLTECH Invent S.A. 1520 Luxembourg (LU)	(72) Inventors: DE NORA, Vittorio CH-3968 Veyras (CH) NGUYEN, Thinh, T. CH-1213 Onex (CH) (74) Representative: Cronin, Brian Harold John  c/o Moltech S.A., Quai du Mont-Blanc 21 1201 Geneva 1201 Geneva (CH)