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(11)

EP 0 362 240 A1

(12)

(43) Date of publication: 11.04.1990 Bulletin 1990/15 (21) Application number: 88904435.0 (22) Date of filing: 23.05.1988

(51) International Patent Classification (IPC):  C25D 21/ 12( . ) C25C 1/ 16( . ) C25D 11/ 12( . ) C25D 21/ 16( . ) C25C 1/ 00( . ) C25C 7/ 06( . ) C25D 21/ 14( . ) (86) International application number: PCT/AU1988/000154 (87) International publication number: WO 1988/009400 (01.12.1988 Gazette 1988/26)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 27.05.1987 AU 19880000021 (71) Applicants: ELECTROLYTIC ZINC COMPANY OF AUSTRALASIA LIMITED Melbourne, VIC 3004 (AU) COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION Parkville, VIC 3052 (AU)

(72) Inventors: NEWMAN, Oliver, Michael, Griffiths Moonah, TAS 7009 (AU) ADCOCK, Peter, Anthony South Hobart, TAS 7000 (AU) AULT, Antony, Robert West Hobart, TAS 7000 (AU) EBERHARDT, John, Edward Monterey, NSW 2217 (AU) HAUB, John, George Wentworthville, NSW 2145 (AU) PRYOR, Arthur, William Waverton, NSW 2060 (AU) (74) Representative: Lawrence, Peter Robin Broughton  GILL JENNINGS & EVERY, Broadgate House, 7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)