(19)

(11)

EP 1 618 261 A1

(12)

(43) Date of publication: 25.01.2006 Bulletin 2006/04 (21) Application number: 04729011.9 (22) Date of filing: 23.04.2004

(51) International Patent Classification (IPC):  E04C 2/24(1968.09) (86) International application number: PCT/AU2004/000535 (87) International publication number: WO 2004/097138 (11.11.2004 Gazette 2004/46)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR Designated Extension States: AL HR LT LV MK (30) Priority: 30.04.2003 AU 2003902044 (71) Applicant: THE UNIVERSITY OF SOUTHERN QUEENSLAND Toowoomba, QLD 4350 (AU)	(72) Inventor: VAN ERP, Gerardus, Maria Toowoomba, Queensland 4350 (AU) (74) Representative: Büchel, Kurt F.  Büchel, Kaminski & Partner Patentanwälte Est. Austrasse 79 9490 Vaduz 9490 Vaduz (LI)