(19)

(11)

EP 0 778 900 A1

(12)

(43) Date of publication: 18.06.1997 Bulletin 1997/25 (21) Application number: 95930337.0 (22) Date of filing: 01.09.1995

(51) International Patent Classification (IPC):  C14C 1/ 08( . ) (86) International application number: PCT/AU1995/000566 (87) International publication number: WO 1996/006953 (07.03.1996 Gazette 1996/11)

(84) Designated Contracting States: ES GB IT PT (30) Priority: 01.09.1994 AU 1994PM07804 (71) Applicants: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION Campbell, ACT 2601 (AU) THE FEDERATED TANNERS ASSOCIATION OF AUSTRALIA Canberra, ACT 2601 (AU)	(72) Inventors: POJER, Peter, Michael North Caulfield, VIC 3161 (AU) HUYNH, Chi, Phuong Dandenong North, VIC 3175 (AU) (74) Representative: Hucker, Charlotte Jane  Gill Jennings & Every Broadgate House, 7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)