(19)
(11) EP 1 440 137 A2

(12)

(88) Date of publication A3:
18.12.2003

(43) Date of publication:
28.07.2004 Bulletin 2004/31

(21) Application number: 02774956.3

(22) Date of filing: 30.10.2002
(51) International Patent Classification (IPC)7C10L 1/14
(86) International application number:
PCT/GB2002/004899
(87) International publication number:
WO 2003/038015 (08.05.2003 Gazette 2003/19)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 02.11.2001 GB 0126396
21.11.2001 US 332029 P
21.02.2002 GB 0204114

(71) Applicants:
  • The Associated Octel Company Limited
    Manchester M90 4AA (GB)
  • Octel America Inc.
    Newark, DE 19702 (US)

(72) Inventors:
  • HENRY, Cyrus, Pershing Jr.
    Wilmington,Delaware 19810 (US)
  • PINCH, David, Leonard
    Wirral CH63 9YY (GB)
  • SNEDDON, Andrea
    Heswall,Wirral CH60 5SE (GB)

(74) Representative: Golding, Louise Ann 
Frank B. Dehn & Co.,179 Queen Victoria Street
London EC4V 4EL
London EC4V 4EL (GB)

   


(54) METHOD