(19)

(11)

EP 0 623 135 A1

(12)

(43) Date of publication: 09.11.1994 Bulletin 1994/45 (21) Application number: 93902933.0 (22) Date of filing: 04.01.1993

(51) International Patent Classification (IPC):  C07D 495/ 04( . ) C12P 17/ 18( . ) (86) International application number: PCT/US1993/000049 (87) International publication number: WO 1993/014094 (22.07.1993 Gazette 1993/18)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 17.01.1992 US 19920822449 (71) Applicant: Universal Foods Corporation Milwaukee Wisconsin 53201 (US)	(72) Inventor: CHEUNG, Alex Fort Collins, CO 80526 (US) (74) Representative: UEXKÜLL & STOLBERG  Patentanwälte Beselerstrasse 4 D-22607 Hamburg D-22607 Hamburg (DE)