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(11)

EP 2 411 173 A1

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(43) Date of publication: 01.02.2012 Bulletin 2012/05 (21) Application number: 10756433.8 (22) Date of filing: 09.03.2010

(51) International Patent Classification (IPC):  B22D 18/02(2006.01) B22D 19/00(2006.01) B22D 18/04(2006.01) B22D 17/22(2006.01) B22D 17/12(2006.01) (86) International application number: PCT/SG2010/000077 (87) International publication number: WO 2010/110742 (30.09.2010 Gazette 2010/39)

(84) Designated Contracting States: 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 SE SI SK SM TR (30) Priority: 27.03.2009 US 164060 P (71) Applicant: Agency for Science, Technology and Research Singapore 138632 (SG)	(72) Inventors: CHUA, Beng Wah Singapore 638075 (SG) HO, Meng Kwong Singapore 638075 (SG) ONG, Raymond Singapore 638075 (SG) LIM, Su Yin Singapore 638075 (SG) SU, Chun Wei Singapore 638075 (SG) (74) Representative: Talbot-Ponsonby, Daniel Frederick  Marks & Clerk LLP 4220 Nash Court Oxford Business Park South Oxford Oxfordshire OX4 2RU Oxford Business Park South Oxford Oxfordshire OX4 2RU (GB)