(19)

(11)

EP 2 630 277 A1

(12)

(43) Date of publication: 28.08.2013 Bulletin 2013/35 (21) Application number: 11772973.1 (22) Date of filing: 20.10.2011

(51) International Patent Classification (IPC):  C30B 25/04(2006.01) C30B 25/20(2006.01) C30B 25/18(2006.01) C30B 29/40(2006.01) (86) International application number: PCT/EP2011/068337 (87) International publication number: WO 2012/052513 (26.04.2012 Gazette 2012/17)

(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 (30) Priority: 21.10.2010 US 405393 P (71) Applicant: Kewar Holdings S.A. 1840 Luxembourg (LU)	(72) Inventors: MEYER, Bernd 44143 Dortmund (DE) NIKOLAEV, Vladimir St. Petersburg 197348 (RU) (74) Representative: Papula Oy  P.O. Box 981 00101 Helsinki 00101 Helsinki (FI)