(19)

(11)

EP 0 858 265 A1

(12)

(43) Date of publication: 19.08.1998 Bulletin 1998/34 (21) Application number: 96926256.0 (22) Date of filing: 09.07.1996

(51) International Patent Classification (IPC):  B01D 63/ 10( . ) B01D 65/ 00( . ) B01D 63/ 12( . ) (86) International application number: PCT/US1996/012760 (87) International publication number: WO 1997/006693 (27.02.1997 Gazette 1997/10)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 11.08.1995 US 19950002154 (71) Applicant: Tortosa, Pedro, J. Houlton, WI 54082 (US)	(72) Inventor: Tortosa, Pedro, J. Houlton, WI 54082 (US) (74) Representative: McCarthy, Denis Alexis, et al  MacLachlan & Donaldson 47 Merrion Square Dublin 2 Dublin 2 (IE)