(19)

(11)

EP 1 060 328 A1

(12)

(43) Date of publication: 20.12.2000 Bulletin 2000/51 (21) Application number: 98963397.9 (22) Date of filing: 30.12.1998

(51) International Patent Classification (IPC)7: F01N 1/08, F01N 1/10, F01N 7/04 (86) International application number: PCT/DK9800/588 (87) International publication number: WO 9935/378 (15.07.1999 Gazette 1999/28)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE (30) Priority: 30.12.1997 DK 155997 (71) Applicant: SILENTOR NOTOX A/S 2640 Hedehusene (DK)	(72) Inventors: FREDERIKSEN, Svend DK-2100 K benhavn (DK) BINGHAM, D. W. Nr. Stafford,Lincolnshire (GB) (74) Representative: Plougmann, Vingtoft & Partners A/S  Sankt Annae Plads 11P.O.Box 3007 1021 Copenhagen K 1021 Copenhagen K (DK)