(19)

(11)

EP 2 074 243 A1

(12)

(43) Date of publication: 01.07.2009 Bulletin 2009/27 (21) Application number: 06793771.4 (22) Date of filing: 22.09.2006

(51) International Patent Classification (IPC):  C25D 11/18(2006.01) C25D 1/04(2006.01) (86) International application number: PCT/EP2006/066660 (87) International publication number: WO 2008/034471 (27.03.2008 Gazette 2008/13)

(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 (71) Applicant: Istanbul Teknik Universitesi 34390 Istanbul (TR)	(72) Inventors: ÜRGEN, Mustafa 34390 Istanbul (TR) YESIL, Yasin 34390 Istanbul (TR) (74) Representative: Sevinç, Erkan  Istanbul Patent & Trademark Consultancy Ltd. Plaza-33, Büyükdere cad. No: 33/16 Sisli 34381 Istanbul 34381 Istanbul (TR)