(19)

(11)

EP 0 232 262 A1

(12)

(43) Date of publication: 19.08.1987 Bulletin 1987/34 (21) Application number: 85904319.0 (22) Date of filing: 15.08.1985

(51) International Patent Classification (IPC):  C12N 15/ 52( . ) C12P 13/ 22( . ) (86) International application number: PCT/US1985/001542 (87) International publication number: WO 1987/001130 (26.02.1987 Gazette 1987/05)

(84) Designated Contracting States: BE CH DE FR GB IT LI NL SE (71) Applicant: STAUFFER CHEMICAL COMPANY Westport Connecticut 06881 (US)	(72) Inventor: MASCARENHAS, Desmond Larkspur, CA 94939 (US) (74) Representative: Brandes, Jürgen, Dr. rer. nat.  Wuesthoff & Wuesthoff Patent- und Rechtsanwälte Schweigerstrasse 2 D-81541 München D-81541 München (DE)