(19)
(11) EP 0 948 388 A1

(12)

(43) Date of publication:
13.10.1999 Bulletin 1999/41

(21) Application number: 97913187.0

(22) Date of filing: 12.11.1997
(51) International Patent Classification (IPC): 
B01D 39/ 20( . )
C04B 41/ 50( . )
 C04B 38/ 00( . )
C04B 41/ 87( . )
(86) International application number:
PCT/FI1997/000687
(87) International publication number:
WO 1998/025685 (18.06.1998 Gazette 1998/24)
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB GR IE IT LI NL PT SE
Designated Extension States:
SI

(30) Priority: 11.12.1996 FI 19960004946

(71) Applicant: Ensto Ceramics Oy
20540 Turku (FI)

(72) Inventors:
  • LEIVO, Jarkko
    FIN-33580 Tampere (FI)
  • NIKKILÄ, Antti-Pekka
    FIN-33200 Tampere (FI)
  • LEVÄNEN, Erkki
    33540 Tampere (FI)
  • MÄNTYLÄ, Tapio
    FIN-33710 Tampere (FI)

(74) Representative: Öhman, Ann-Marie 
Turun Patenttitoimisto Oy, P.O. Box 99
20521 Turku
20521 Turku (FI)

   


(54) FILTER