(19)

(11)

EP 0 717 783 A1

(12)

(43) Date of publication: 26.06.1996 Bulletin 1996/26 (21) Application number: 94926722.0 (22) Date of filing: 07.09.1994

(51) International Patent Classification (IPC):  C22B 3/ 04( . ) C22B 34/ 12( . ) C22B 3/ 00( . ) (86) International application number: PCT/AU1994/000528 (87) International publication number: WO 1995/007366 (16.03.1995 Gazette 1995/12)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 07.09.1993 AU 1993PM01051 (71) Applicant: TECHNOLOGICAL RESOURCES PTY. LTD. Melbourne, VIC 3000 (AU)	(72) Inventors: McCLELLAND, Ross Alexander Maryknoll, VIC 3812 (AU) HOLLITT, Michael John Box Hill North, VIC 3129 (AU) (74) Representative: West, Alan Harry, et al  R.G.C. Jenkins & Co. 26 Caxton Street London SW1H 0RJ London SW1H 0RJ (GB)