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(11)

EP 1 771 645 A1

(12)

(43) Date of publication: 11.04.2007 Bulletin 2007/15 (21) Application number: 05762913.1 (22) Date of filing: 26.07.2005

(51) International Patent Classification (IPC):  F01N 3/20(2006.01) F01N 3/08(2006.01) F01N 5/04(2006.01) (86) International application number: PCT/GB2005/002934 (87) International publication number: WO 2006/010922 (02.02.2006 Gazette 2006/05)

(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: 29.07.2004 GB 0416917 (71) Applicant: Eminox Limited Gainsborough, Lincolnshire DN21 2TU (GB)	(72) Inventors: BUSH, Phillip, David Fiskerton, Lincoln LN3 4GD (GB) ARROWSMITH, Duncan Lincoln LN2 5JB (GB) TAYLOR, Carl, Robert Scunthorpe DN16 1EX (GB) (74) Representative: Copp, David Christopher et al Dummett Copp, 25 The Square, Martlesham Heath Ipswich, Suffolk, IP5 3SL Ipswich, Suffolk, IP5 3SL (GB)