(19)

(11)

EP 0 613 448 A1

(12)

(43) Date of publication: 07.09.1994 Bulletin 1994/36 (21) Application number: 92922732.0 (22) Date of filing: 30.10.1992

(51) International Patent Classification (IPC):  C01B 31/ 10( . ) C10B 47/ 06( . ) C10B 1/ 04( . ) C10B 47/ 44( . ) (86) International application number: PCT/AU1992/000589 (87) International publication number: WO 1993/009061 (13.05.1993 Gazette 1993/12)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL SE (30) Priority: 31.10.1991 AU 19910009227 08.01.1992 AU 19920000315 (71) Applicant: ACTIVATED CARBONS AUSTRALIA LIMITED Glebe, NSW 2037 (AU)	(72) Inventors: ROBERTSON, Struan, Glen Paradise Waters, QLD 4217 (AU) PACKER, Leslie, James Southport, QLD 4215 (AU) (74) Representative: Jenkins, Peter David  PAGE WHITE & FARRER 54 Doughty Street London WC1N 2LS London WC1N 2LS (GB)