(19)

(11)

EP 1 620 359 A2

(12)

(88) Date of publication A3: 24.02.2005 (43) Date of publication: 01.02.2006 Bulletin 2006/05 (21) Application number: 04720484.7 (22) Date of filing: 12.03.2004

(51) International Patent Classification (IPC):  C01B 39/48(1995.01) C10G 69/02(1980.01) C10G 35/095(1980.01) C07C 1/20(1968.09) C07C 2/66(1980.01) C10G 47/16(1980.01) C10G 11/05(1980.01) C07C 5/41(1980.01) C07C 2/12(1980.01) C07C 5/22(1968.09) (86) International application number: PCT/US2004/007754 (87) International publication number: WO 2004/094347 (04.11.2004 Gazette 2004/45)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 26.03.2003 US 401632 26.03.2003 US 401618 26.03.2003 US 401616 (71) Applicants: Chevron U.S.A. Inc. San Ramon, CA 94583 (US) Elomari, Saleh Fairfield, CA 94534 (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)