(19)

(11)

EP 0 145 728 A1

(12)

(43) Date of publication: 26.06.1985 Bulletin 1985/26 (21) Application number: 84901943.0 (22) Date of filing: 25.05.1984

(51) International Patent Classification (IPC):  C22B 1/ 00( . ) C01G 1/ 06( . ) C01G 53/ 08( . ) C22B 1/ 10( . ) C22B 3/ 10( . ) C01B 7/ 19( . ) C01G 51/ 08( . ) C22B 1/ 02( . ) C22B 3/ 00( . ) C22B 23/ 00( . ) (86) International application number: PCT/AU1984/000094 (87) International publication number: WO 1984/004759 (06.12.1984 Gazette 1984/28)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 25.05.1983 AU 19830009528 (71) Applicant: OABRAND PTY. LIMITED Kangaroo Point, NSW 2224 (AU)	(72) Inventors: LLOYD, Robert Galston, NSW 2159 (AU) TURNER, Maxwell, James Sylvania, NSW 2224 (AU) (74) Representative: Baillie, Iain Cameron  c/o Ladas & Parry Altheimer Eck 2 D-80331 München D-80331 München (DE)