(19)

(11)

EP 0 653 954 A1

(12)

(43) Date of publication: 24.05.1995 Bulletin 1995/21 (21) Application number: 94916918.0 (22) Date of filing: 02.05.1994

(51) International Patent Classification (IPC):  B01D 45/ 08( . ) B01D 45/ 16( . ) (86) International application number: PCT/EP1994/001392 (87) International publication number: WO 1994/028997 (22.12.1994 Gazette 1994/28)

(84) Designated Contracting States: AT BE CH DE FR GB LI SE (30) Priority: 08.06.1993 GB 19930011768 (71) Applicant: ANDREAE, Erhard Charles CH-1110 Morges (CH)	(72) Inventor: ANDREAE, Erhard Charles CH-1110 Morges (CH) (74) Representative: Hranitzky, Wilhelm Max, et al  c/o WILLIAM BLANC & CIE Conseils en Propriété Industrielle SA 6, rue de la Grotte CH-1003 Lausanne CH-1003 Lausanne (CH)