(19)

(11)

EP 0 769 979 A1

(12)

(43) Date of publication: 02.05.1997 Bulletin 1997/18 (21) Application number: 95927475.0 (22) Date of filing: 07.07.1995

(51) International Patent Classification (IPC):  B01D 29/ 05( . ) B01D 63/ 08( . ) B01D 65/ 00( . ) B01D 33/ 21( . ) B01D 63/ 16( . ) B01D 65/ 08( . ) (86) International application number: PCT/US1995/009457 (87) International publication number: WO 1996/001676 (25.01.1996 Gazette 1996/05)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 08.07.1994 US 19940272218 (71) Applicant: Pall Corporation East Hills, New York 11548 (US)	(72) Inventors: MILLER, John, D. Ithaca, NY 14850 (US) GEIBEL, Stephen, A. Cortland, NY 13045 (US) HURWITZ, Mark, F. Ithaca, NY 14850 (US) FENDYA, Thomas, J. Homer, NY 13077 (US) ALEX, Tony Marrick, NY 11566 (US) (74) Representative: Knott, Stephen Gilbert  MATHISEN, MACARA & CO. The Coach House 6-8 Swakeleys Road Ickenham Uxbridge UB10 8BZ Ickenham Uxbridge UB10 8BZ (GB)