(19)

(11)

EP 0 879 078 A1

(12)

(43) Date of publication: 25.11.1998 Bulletin 1998/48 (21) Application number: 96941767.0 (22) Date of filing: 11.12.1996

(51) International Patent Classification (IPC):  B01D 33/ 067( . ) B01D 46/ 42( . ) B01D 46/ 10( . ) (86) International application number: PCT/GB1996/003053 (87) International publication number: WO 1997/024170 (10.07.1997 Gazette 1997/30)

(84) Designated Contracting States: BE DE ES FI FR GB (30) Priority: 29.12.1995 GB 19950026629 (71) Applicant: SCAPA GROUP PLC Blackburn, Lancashire BB2 6AY (GB)	(72) Inventor: TEBBUTT, David, John Mullallo, W.A. 6127 (AU) (74) Representative: Middlemist, Ian Alastair, et al  Wilson Gunn M'Caw, 41-51 Royal Exchange, Cross Street Manchester, M2 7BD Manchester, M2 7BD (GB)