(19)

(11)

EP 1 032 546 A1

(12)

(43) Date of publication: 06.09.2000 Bulletin 2000/36 (21) Application number: 98945847.6 (22) Date of filing: 03.09.1998

(51) International Patent Classification (IPC)7: C04B 35/52 (86) International application number: PCT/US9818/285 (87) International publication number: WO 9911/582 (11.03.1999 Gazette 1999/10)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 04.09.1997 US 923605 (71) Applicant: Pall Corporation East Hills, NY 11548-1209 (US)	(72) Inventors: GEIBEL, Stephen, A. Cortland, NY 13045 (US) BHANOT, Ashok, K. Cortland, NY 11747 (US) (74) Representative: Knott, Stephen Gilbert et al MATHISEN, MACARA & CO.The Coach House6-8 Swakeleys Road IckenhamUxbridge UB10 8BZ IckenhamUxbridge UB10 8BZ (GB)