(19)

(11)

EP 1 009 513 A1

(12)

(43) Date of publication: 21.06.2000 Bulletin 2000/25 (21) Application number: 98940442.1 (22) Date of filing: 01.09.1998

(51) International Patent Classification (IPC)7: B01D 39/14, B01D 25/12 (86) International application number: PCT/GB9802/617 (87) International publication number: WO 9912/634 (18.03.1999 Gazette 1999/11)

(84) Designated Contracting States: AT DE FR GB SE (30) Priority: 06.09.1997 GB 9718841 (71) Applicant: SCAPA GROUP PLC Blackburn,Lancashire BB2 6AY (GB)	(72) Inventor: SAYERS, Ian, Christison Ribchester,Near Preston,Lancashire PR3 (GB) (74) Representative: Middlemist, Ian Alastair et al Wilson Gunn M'Caw,41-51 Royal Exchange,Cross Street Manchester, M2 7BD Manchester, M2 7BD (GB)