(19)

(11)

EP 0 656 816 A1

(12)

(43) Date of publication: 14.06.1995 Bulletin 1995/24 (21) Application number: 93916131.0 (22) Date of filing: 30.07.1993

(51) International Patent Classification (IPC):  B01D 39/ 08( . ) B03C 3/ 155( . ) B03C 3/ 30( . ) B01D 39/ 16( . ) B03C 3/ 28( . ) (86) International application number: PCT/IE1993/000042 (87) International publication number: WO 1994/003276 (17.02.1994 Gazette 1994/05)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 30.07.1992 IE 19920002503 (71) Applicant: E.V.E. HOLDINGS LIMITED Dublin 8 (IE)	(72) Inventor: FORDE, George 86 St. Columbanus Road Dublin 14 (IE) (74) Representative: McCarthy, Denis Alexis, et al  MacLachlan & Donaldson 47 Merrion Square Dublin 2 Dublin 2 (IE)