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(11)

EP 2 297 281 A2

(12)

(88) Date of publication A3: 21.01.2010 (43) Date of publication: 23.03.2011 Bulletin 2011/12 (21) Application number: 09758935.2 (22) Date of filing: 12.05.2009

(51) International Patent Classification (IPC):  C10G 59/02(2006.01) C10G 35/09(2006.01) C10G 35/095(2006.01) (86) International application number: PCT/US2009/043580 (87) International publication number: WO 2009/148772 (10.12.2009 Gazette 2009/50)

(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 TR Designated Extension States: AL BA RS (30) Priority: 05.06.2008 US 134153 (71) Applicant: Chevron U.S.A. Incorporated San Ramon, California 94583 (US)	(72) Inventors: MILLER, Stephen, J. San Francisco CA 94121 (US) CHEN, Cong-yan Kensington CA 94708 (US) ADAMS, Brian, C. Berkeley CA 94709 (US) ZIEMER, James, N. Martinez CA 94553 (US) (74) Representative: Nash, David Allan et al Haseltine Lake LLP Redcliff Quay 120 Redcliff Street Bristol BS1 6HU Bristol BS1 6HU (GB)