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(11)

EP 2 331 657 A2

(12)

(88) Date of publication A3: 03.06.2010 (43) Date of publication: 15.06.2011 Bulletin 2011/24 (21) Application number: 09815045.1 (22) Date of filing: 15.09.2009

(51) International Patent Classification (IPC):  C10G 69/04(2006.01) C10G 69/06(2006.01) (86) International application number: PCT/US2009/056915 (87) International publication number: WO 2010/033480 (25.03.2010 Gazette 2010/12)

(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 Designated Extension States: AL BA RS (30) Priority: 18.09.2008 US 233171 18.09.2008 US 233393 18.09.2008 US 233439 18.09.2008 US 212796 18.09.2008 US 212737 18.09.2008 US 233327 (71) Applicant: Chevron U.S.A., Inc. San Ramon, CA 94583 (US)

(72) Inventors: CHABOT, Julie Novato California 94949 (US) KOU, Bo Albany California 94706 (US) BRENNAN, Vivion Andrew San Francisco California 94121 (US) MARIS, Erin Alameda California 94501 (US) YANG, Shuwu Richmond California 94806 (US) REYNOLDS, Bruce Martinez California 94552 (US) BISWAS, Goutam Danville California 94526 (US) FARSHID, Darush Larkspur California 94939 (US) CHEN, Kaidong Albany California 94706 (US) (74) Representative: Nash, David Allan  Haseltine Lake LLP Redcliff Quay 120 Redcliff Street Bristol BS1 6HU Bristol BS1 6HU (GB)