(19)

(11)

EP 0 802 720 A1

(12)

(43) Date of publication: 29.10.1997 Bulletin 1997/44 (21) Application number: 95924622.0 (22) Date of filing: 20.06.1995

(51) International Patent Classification (IPC):  A01H 5/ 00( . ) A21D 2/ 18( . ) A23G 1/ 00( . ) A23G 1/ 56( . ) A23G 3/ 34( . ) A23L 1/ 05( . ) A23L 1/ 06( . ) C12N 15/ 00( . ) C12N 15/ 82( . ) A01H 5/ 10( . ) A21D 13/ 00( . ) A23G 1/ 42( . ) A23G 3/ 00( . ) A23G 3/ 36( . ) A23L 1/ 0522( . ) C12N 5/ 10( . ) C12N 15/ 09( . ) C12R 1/ 91( . ) (86) International application number: PCT/US1995/007828 (87) International publication number: WO 1995/035026 (28.12.1995 Gazette 1996/03)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 21.06.1994 US 19940263921 29.11.1994 US 19940346602 07.06.1995 US 19950474063 07.06.1995 US 19950487466 (71) Applicants: ZENECA LIMITED London W1Y 6LN (GB) Cerestar USA, Inc. Hammond, IN 46320-1094 (US)

(72) Inventors: KEELING, Peter Lewis Ames, IA 50014 (US) KATZ, Frances Crown Point, IN 46307 (US) CHANG, Ming-Tang Ames, IA 50014-3760 (US) HAUBER, Richard Chicago, IL 60616 (US) FRIEDMAN, Robert Chicago, IL 60616 (US) (74) Representative: Huskisson, Frank Mackie, et al  Intellectual Property Department, ZENECA AGrochemicals, Jealott's Hill Research Station, P.O. Box 3538 Bracknell, Berkshire RG12 6YA Bracknell, Berkshire RG12 6YA (GB)