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EP 0 595 993 A1

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(43) Date of publication: 11.05.1994 Bulletin 1994/19 (21) Application number: 92916550.0 (22) Date of filing: 24.07.1992

(51) International Patent Classification (IPC):  A23J 1/ 20( . ) B01D 61/ 00( . ) B01J 47/ 12( . ) C07K 14/ 575( . ) C07K 14/ 79( . ) C12N 9/ 08( . ) B01D 15/ 04( . ) B01J 47/ 00( . ) C07K 1/ 18( . ) C07K 14/ 745( . ) C07K 16/ 00( . ) (86) International application number: PCT/AU1992/000381 (87) International publication number: WO 1993/002098 (04.02.1993 Gazette 1993/04)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE (30) Priority: 25.07.1991 AU 19910007436 (71) Applicants: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION Campbell, Australian Capital Territory 2601 (AU) DAIRY RESEARCH AND DEVELOPMENT CORPORATION Glen Iris, VIC 3146 (AU) THE STATE OF QUEENSLAND DEPARTMENT OF PRIMARY INDUSTRIES Brisbane, QLD 4000 (AU)

(72) Inventors: MITCHELL, Ian, Robert Narre Warren, VIC 3805 (AU) SMITHERS, Geoffrey, Welsford Cheltenham, VIC 3192 (AU) DIONYSIUS, David, Alan Nudgee, QLD 4014 (AU) GRIEVE, Paul, Anthony Springwood, QLD 4127 (AU) REGESTER, Geoffrey, Owen Ferntree Gully, VIC 3056 (AU) JAMES, Eric, Arnold St Lucia, QLD 4067 (AU) (74) Representative: Marshall, Monica Anne  J.A. KEMP & CO. 14 South Square Gray's Inn London WC1R 5LX London WC1R 5LX (GB)