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EP 0 416 020 A1

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(43) Date of publication: 13.03.1991 Bulletin 1991/11 (21) Application number: 89906676.0 (22) Date of filing: 24.05.1989

(51) International Patent Classification (IPC):  A01N 25/ 04( . ) (86) International application number: PCT/AU1989/000230 (87) International publication number: WO 1989/011220 (30.11.1989 Gazette 1989/28)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 25.05.1988 AU 19880008437 (71) Applicant: DARATECH PTY. LTD. Melbourne, VIC 3004 (AU)

(72) Inventors: LICHTI, Gottfried Essendon, VIC 3040 (AU) FLYNN, Anthony, Gerard Horsham, VIC 3400 (AU) SERBAN, Alexander Doncaster, VIC 3108 (AU) CHENG, Jin, Ling Clayton, VIC 3168 (AU) PARK, Darren, James Noble Park, VIC 3174 (AU) JACKSON, William, Roy Glen Waverley, VIC 3150 (AU) (74) Representative: Hallybone, Huw George, et al  CARPMAELS AND RANSFORD 43 Bloomsbury Square London WC1A 2RA London WC1A 2RA (GB)