(19)
(11) EP 1 497 397 A2

(12)

(88) Date of publication A3:
15.01.2004

(43) Date of publication:
19.01.2005 Bulletin 2005/03

(21) Application number: 03717214.5

(22) Date of filing: 14.03.2003
(51) International Patent Classification (IPC)7: C10L 1/00, C10L 1/22, C10M 171/00, C10M 133/28, G01N 33/28, G01N 31/00
(86) International application number:
PCT/EP2003/002823
(87) International publication number:
WO 2003/078551 (25.09.2003 Gazette 2003/39)
(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 PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 15.03.2002 EP 02251890

(71) Applicant: SHELL INTERNATIONALE RESEARCHMAATSCHAPPIJ B.V.
2596 HR Den Haag (NL)

(72) Inventors:
  • LUNT, Nigel, Edmund
    Cheshire, CH2 4NU (GB)
  • SOUTHBY, Mark, Clift
    Cheshire, CH2 4NU (GB)
  • WETTON, Robert, John
    Cheshire, CH2 4NU (GB)
  • WOOLLASTON, Emma, Jayne
    Manchester M20 2UT (GB)

   


(54) OIL COMPOSITION AND METHOD OF DETECTING A MARKER IN AN OIL COMPOSITION