(19)

(11)

EP 0 683 627 A1

(12)

(43) Date of publication: 29.11.1995 Bulletin 1995/48 (21) Application number: 94905579.0 (22) Date of filing: 06.01.1994

(51) International Patent Classification (IPC):  A01N 25/ 16( . ) A01N 47/ 34( . ) A01N 25/ 34( . ) A01N 47/ 36( . ) (86) International application number: PCT/US1994/000068 (87) International publication number: WO 1994/017660 (18.08.1994 Gazette 1994/19)

(84) Designated Contracting States: CH DE DK FR GB IT LI SE (30) Priority: 10.02.1993 US 19930015758 (71) Applicant: E.I. DU PONT DE NEMOURS AND COMPANY Wilmington Delaware 19898 (US)	(72) Inventor: JACKISCH, David, Allan Wilmington, DE 19803-3839 (US) (74) Representative: Hildyard, Edward Martin, et al  Frank B. Dehn & Co. European Patent Attorneys Imperial House 15-19 Kingsway London WC2B 6UZ London WC2B 6UZ (GB)