(19)

(11)

EP 3 268 501 A1

(12)

(43) Date of publication: 17.01.2018 Bulletin 2018/03 (21) Application number: 16760941.1 (22) Date of filing: 11.03.2016

(51) International Patent Classification (IPC):  C22B 3/16(2006.01) C22B 15/14(2006.01) C22B 3/12(2006.01) C22B 11/00(2006.01) (86) International application number: PCT/AU2016/050171 (87) International publication number: WO 2016/141438 (15.09.2016 Gazette 2016/37)

(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 Designated Validation States: MA MD (30) Priority: 11.03.2015 AU 2015900865 (71) Applicant: Curtin University Bentley, WA 6102 (AU)	(72) Inventors: EKSTEEN, Jacobus Johannes Bull Creek, Western Australia 6149 (AU) ORABY, Elsayed Abdelrady Beckenham, Western Australia 6107 (AU) (74) Representative: Nederlandsch Octrooibureau  P.O. Box 29720 2502 LS The Hague 2502 LS The Hague (NL)