(19)
(11) EP 1 334 168 A1

(12)

(43) Date of publication:
13.08.2003 Bulletin 2003/33

(21) Application number: 01968592.4

(22) Date of filing: 05.09.2001
(51) International Patent Classification (IPC)7: C10G 45/02, C10G 45/04
(86) International application number:
PCT/US0127/669
(87) International publication number:
WO 0202/0701 (14.03.2002 Gazette 2002/03)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 07.09.2000 US 230646 P
05.06.2001 US 874202

(71) Applicant: Chevron U.S.A. Inc.
San Ramon, CA 94583 (US)

(72) Inventor:
  • CHABOT, Julie
    Novato, CA 94949 (US)

(74) Representative: Nash, David Allan 
Haseltine Lake & Co.,Imperial House,15-19 Kingsway
London WC2B 6UD
London WC2B 6UD (GB)

   


(54) EXTENSION OF CATALYST CYCLE LENGTH IN RESIDUUM DESULFURIZATION PROCESSES