(19)

(11)

EP 1 123 253 A1

(12)

(43) Date of publication: 16.08.2001 Bulletin 2001/33 (21) Application number: 99945250.1 (22) Date of filing: 25.08.1999

(51) International Patent Classification (IPC)7: B67D 1/14 (86) International application number: PCT/US9919/609 (87) International publication number: WO 0010/907 (02.03.2000 Gazette 2000/09)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 25.08.1998 GB 9818525 (71) Applicant: MOBIL OIL CORPORATION Fairfax,Virginia 22037-0001 (US)	(72) Inventors: BUNCE, Martin Christopher,Gardener's Cottage Marlborough,Wiltshire 3N8 3BE (GB) PEACOP, Alex J. Savernake Forest,Marlborough,Wiltshire (GB) (74) Representative: Hucker, Charlotte Jane  Gill Jennings & EveryBroadgate House,7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)