(19)

(11)

EP 0 236 418 A1

(12)

(43) Date of publication: 16.09.1987 Bulletin 1987/38 (21) Application number: 86905445.0 (22) Date of filing: 09.09.1986

(51) International Patent Classification (IPC):  A01N 31/ 02( . ) (86) International application number: PCT/NO1986/000063 (87) International publication number: WO 1987/001561 (26.03.1987 Gazette 1987/07)

(84) Designated Contracting States: AT CH DE FR GB LI NL SE (30) Priority: 13.09.1985 NO 19850003597 (71) Applicant: BORREGAARD INDUSTRIES LIMITED N-1701 Sarpsborg (NO)	(72) Inventors: BAKKE, Alf N-1430 As (NO) VITE, Jean, Pierre D-7800 Freiburg (DE) (74) Representative: Perry, Robert Edward, et al  GILL JENNINGS & EVERY Broadgate House 7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)