(19)

(11)

EP 0 838 045 A1

(12)

(43) Date of publication: 29.04.1998 Bulletin 1998/18 (21) Application number: 96923595.0 (22) Date of filing: 02.07.1996

(51) International Patent Classification (IPC):  B01D 61/ 14( . ) G03F 7/ 30( . ) C02F 1/ 44( . ) (86) International application number: PCT/US1996/011185 (87) International publication number: WO 1997/003382 (30.01.1997 Gazette 1997/06)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 13.07.1995 US 19950502307 (71) Applicant: Polyfibron Technologies, Inc. Atlanta, Georgia 30336-2293 (US)	(72) Inventors: KLINGER, Lori Marietta, GA 30064 (US) ROSEN, Dan Acworth, GA 30102 (US) MARTIN, Raymond, E. Duluth, GA 30136 (US) BOYCE, Howard, B. Conyers, GA 30208 (US) (74) Representative: Price, Nigel John King  J.A. KEMP & CO. 14 South Square Gray's Inn London WC1R 5LX London WC1R 5LX (GB)