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(11)

EP 2 529 043 A1

(12)

(43) Date of publication: 05.12.2012 Bulletin 2012/49 (21) Application number: 11705697.8 (22) Date of filing: 28.01.2011

(51) International Patent Classification (IPC):  C30B 11/00(2006.01) (86) International application number: PCT/IB2011/050392 (87) International publication number: WO 2011/092659 (04.08.2011 Gazette 2011/31)

(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: 28.01.2010 US 299133 P (71) Applicant: MEMC Singapore Pte. Ltd. Singapore 048424 (SG)	(72) Inventors: PHILLIPS, Richard J. St. Peters, Missouri 63376 (US) DEVULAPALLI, Balaji St. Peters, Missouri 63376 (US) KIMBEL, Steven L. St. Peters, Missouri 63376 (US) DESHPANDE, Aditya J. St. Peters, Missouri 63376 (US) (74) Representative: Maiwald, Walter  Maiwald Patentanwalts GmbH Elisenhof Elisenstrasse 3 80335 München 80335 München (DE)