(19)

(11)

EP 0 744 983 A1

(12)

(43) Date of publication: 04.12.1996 Bulletin 1996/49 (21) Application number: 95907665.0 (22) Date of filing: 03.02.1995

(51) International Patent Classification (IPC):  B01D 1/ 28( . ) (86) International application number: PCT/FI1995/000046 (87) International publication number: WO 1995/021009 (10.08.1995 Gazette 1995/34)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 03.02.1994 FI 19940000495 (71) Applicant: HIGH SPEED TECH OY LTD. 33100 Tampere (FI)	(72) Inventor: SÄILY, Kari FIN-02300 Espoo (FI) (74) Representative: Kahilainen, Hannu Juhani, et al  Tampereen Patenttitoimisto Oy, Hermiankatu 6 33720 Tampere 33720 Tampere (FI)