(19)

(11)

EP 0 804 284 A1

(12)

(43) Date of publication: 05.11.1997 Bulletin 1997/45 (21) Application number: 95941498.0 (22) Date of filing: 30.11.1995

(51) International Patent Classification (IPC):  A01N 25/ 28( . ) B01J 13/ 16( . ) (86) International application number: PCT/US1995/015543 (87) International publication number: WO 1996/022159 (25.07.1996 Gazette 1996/34)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 19.01.1995 GB 19950001017 (71) Applicant: DOWELANCO Indianapolis, Indiana 46268-1054 (US)	(72) Inventors: MULQUEEN, Patrick, Jospeh Oxon OX14 3YJ (GB) LUBETKINS, Steven, Duff Oxon OX12 7AT (GB) SMITH, Geoff Oxon SN7 8QN (GB) (74) Representative: Raynor, John  W.H. Beck, Greener & Co 7 Stone Buildings Lincoln's Inn London WC2A 3SZ London WC2A 3SZ (GB)