(19)

(11)

EP 2 350 236 A2

(12)

(88) Date of publication A3: 08.07.2010 (43) Date of publication: 03.08.2011 Bulletin 2011/31 (21) Application number: 09818363.5 (22) Date of filing: 29.09.2009

(51) International Patent Classification (IPC):  C10L 1/18(2006.01) (86) International application number: PCT/US2009/058755 (87) International publication number: WO 2010/039693 (08.04.2010 Gazette 2010/14)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR (30) Priority: 02.10.2008 US 244349 (71) Applicant: Chevron U.S.A. Incorporated San Ramon, California 94583 (US)	(72) Inventor: MILLER, Stephen Joseph San Francisco, California 94121 (US) (74) Representative: Nash, David Allan  Haseltine Lake LLP Redcliff Quay 120 Redcliff Street Bristol BS1 6HU Bristol BS1 6HU (GB)