(19)

(11)

EP 1 812 694 A1

(12)

(43) Date of publication: 01.08.2007 Bulletin 2007/31 (21) Application number: 05796734.1 (22) Date of filing: 26.10.2005

(51) International Patent Classification (IPC):  F01N 3/00(2006.01) F01N 3/28(2006.01) F01N 3/022(2006.01) (86) International application number: PCT/DK2005/000690 (87) International publication number: WO 2006/045315 (04.05.2006 Gazette 2006/18)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 26.10.2004 DK 200401640 (71) Applicant: Silentor Holding A/S 2640 Hedehusene (DK)	(72) Inventor: FREDERIKSEN, Svend DK-2840 Holte (DK) (74) Representative: Plougmann & Vingtoft A/S  Sundkrogsgade 9, P.O. Box 831 2100 Copenhagen Ø 2100 Copenhagen Ø (DK)