(19)

(11)

EP 1 235 622 A1

(12)

(43) Date of publication: 04.09.2002 Bulletin 2002/36 (21) Application number: 00954125.1 (22) Date of filing: 17.08.2000

(51) International Patent Classification (IPC)7: B01D 24/00, B01D 61/46, B01D 61/48, C08J 5/20 (86) International application number: PCT/US0022/624 (87) International publication number: WO 0101/2292 (22.02.2001 Gazette 2001/08)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 18.08.1999 US 376238 (71) Applicant: The University of Chicago Chicago,Illinois 60637 (US)	(72) Inventors: DATTA, Rathin Chicago, IL 60657 (US) LIN, YuPo Naperville, Illinois 60540 (US) BURKE, Dennis Roscoe, IL 61073 (US) TSAI, Shih-Perng Naperville, IL 60565 (US) (74) Representative: McKelvey, Ian Edward  Serjeants,25 The Crescent,King Street Leicester LE1 6RX Leicester LE1 6RX (GB)