(19)

(11)

EP 2 872 671 A1

(12)

(43) Date of publication: 20.05.2015 Bulletin 2015/21 (21) Application number: 13807445.5 (22) Date of filing: 20.06.2013

(51) International Patent Classification (IPC):  C23C 28/00(2006.01) C04B 41/00(2006.01) (86) International application number: PCT/FI2013/050685 (87) International publication number: WO 2013/190185 (27.12.2013 Gazette 2013/52)

(84) Designated Contracting States: AL 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 RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 21.06.2012 FI 20125694 (71) Applicant: Coligro OY. 00670 Helsinki (FI)	(72) Inventors: KINNUNEN, Petteri FI-00670 Helsinki (FI) RUUTTU, Jari FI-00670 Helsinki (FI) (74) Representative: Kolster Oy Ab  Iso Roobertinkatu 23 PO Box 148 00121 Helsinki 00121 Helsinki (FI)