(19)

(11)

EP 1 807 348 A1

(12)

(43) Date of publication: 18.07.2007 Bulletin 2007/29 (21) Application number: 05798730.7 (22) Date of filing: 26.09.2005

(51) International Patent Classification (IPC):  C01B 39/48(2006.01) C10G 47/04(2006.01) B01J 29/06(2006.01) C10G 49/08(2006.01) (86) International application number: PCT/US2005/034250 (87) International publication number: WO 2006/039213 (13.04.2006 Gazette 2006/15)

(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 NL PL PT RO SE SI SK TR (30) Priority: 30.09.2004 US 956267 30.09.2004 US 956276 30.09.2004 US 956313 (71) Applicant: Chevron U.S.A., Inc. San Ramon, CA 94583 (US)	(72) Inventor: ELOMARI, Saleh Fairfield, CA 94534 (US) (74) Representative: Nash, David Allan  HASELTINE LAKE, Redcliff Quay 120 Redcliff Street Bristol BS1 6HU Bristol BS1 6HU (GB)