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(11)

EP 2 046 496 A2

(12)

(88) Date of publication A3: 07.08.2008 (43) Date of publication: 15.04.2009 Bulletin 2009/16 (21) Application number: 07813564.7 (22) Date of filing: 31.07.2007

(51) International Patent Classification (IPC):  B01J 29/04(2006.01) B01J 29/18(2006.01) C10G 47/10(2006.01) B01J 29/08(2006.01) B01J 29/80(2006.01) C10G 47/20(2006.01) (86) International application number: PCT/US2007/074782 (87) International publication number: WO 2008/016888 (07.02.2008 Gazette 2008/06)

(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 MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 31.07.2006 US 820907 P 26.07.2007 US 828983 (71) Applicant: Chevron U.S.A., Inc. San Ramon, CA 94583 (US)	(72) Inventors: MAESEN, Theodorus Point Richmond, California 94871 (US) FONG, Darren Oakland, California 94619 (US) VOGEL, Roger Fairfeild, California 94534 (US) LEE, Bowmann Albany, California 94706 (US) DYKSTRA, Dennis Pinole, California 94564 (US) (74) Representative: Nash, David Allan  HASELTINE LAKE Redcliff Quay 120 Redcliff Street Bristol BS1 6HU Bristol BS1 6HU (GB)