(19)

(11)

EP 0 796 140 A2

(12)

(43) Date of publication: 24.09.1997 Bulletin 1997/39 (21) Application number: 95938540.0 (22) Date of filing: 05.12.1995

(51) International Patent Classification (IPC):  B01D 63/ 02( . ) B01D 67/ 00( . ) B01D 65/ 00( . ) B01D 69/ 14( . ) (86) International application number: PCT/GB1995/002829 (87) International publication number: WO 1996/017675 (13.06.1996 Gazette 1996/27)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 08.12.1994 GB 19940024723 (71) Applicant: FSM Technologies Ltd. Clydebank G81 2NT (GB)	(72) Inventor: HOOD, Robert, Gordon Lochwinnoch PA12 4NA (GB) (74) Representative: Ouzman, Beverley Nicola Claire, et al  Murgitroyd and Company, 373 Scotland Street Glasgow G5 8QA Glasgow G5 8QA (GB)