(19)

(11)

EP 1 525 290 A1

(12)

(43) Date of publication: 27.04.2005 Bulletin 2005/17 (21) Application number: 02778739.9 (22) Date of filing: 05.11.2002

(51) International Patent Classification (IPC)7: C10L 1/18, C10L 1/22 (86) International application number: PCT/US2002/035507 (87) International publication number: WO 2003/040271 (15.05.2003 Gazette 2003/20)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR Designated Extension States: AL LT LV MK (30) Priority: 05.11.2001 US 338946 P (71) Applicant: International Fuel Technology, Inc. St Louis, MO 63105 (US)	(72) Inventor: WILLIAMSON, Ian Stockport, Cheshire SK7 2HE (GB) (74) Representative: Symons, Rupert Jonathan  HLBBshaw,10th Floor1 Hagley Road, Birmingham B16 8TG Birmingham B16 8TG (GB)