(19)

(11)

EP 1 761 652 A1

(12)

(43) Date of publication: 14.03.2007 Bulletin 2007/11 (21) Application number: 05752425.8 (22) Date of filing: 23.06.2005

(51) International Patent Classification (IPC):  C22C 23/04(2006.01) (86) International application number: PCT/AU2005/000903 (87) International publication number: WO 2006/000022 (05.01.2006 Gazette 2006/01)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR (30) Priority: 24.06.2004 AU 2004903446 25.11.2004 AU 2004906768 (71) Applicant: Cast Centre Pty., Ltd. St. Lucia, Queensland 4067 (AU)	(72) Inventor: ABBOTT, Trevor, Bruce Glen Waverley, VIC 3150 (AU) (74) Representative: Ward, David Ian  Marks & Clerk, Alpha Tower, Suffolk Street, Queensway Birmingham B1 1TT Birmingham B1 1TT (GB)