(19)

(11)

EP 0 705 133 A1

(12)

(43) Date of publication: 10.04.1996 Bulletin 1996/15 (21) Application number: 94918707.0 (22) Date of filing: 22.06.1994

(51) International Patent Classification (IPC):  B01D 21/ 00( . ) B01D 33/ 11( . ) B01D 24/ 32( . ) (86) International application number: PCT/CA1994/000327 (87) International publication number: WO 1995/001216 (12.01.1995 Gazette 1995/03)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: SI (30) Priority: 23.06.1993 CA 19932099022 (71) Applicant: ABEL, Günther Whistler, British Columbia V0N 1B8 (CA)	(72) Inventor: ABEL, Günther Whistler, British Columbia V0N 1B8 (CA) (74) Representative: Orr, William McLean  Urquhart-Dykes & Lord, Tower House, Merrion Way Leeds LS2 8PA Leeds LS2 8PA (GB)