(19)
(11) EP 1 402 111 A1

(12)

(43) Date of publication:
31.03.2004 Bulletin 2004/14

(21) Application number: 02774036.4

(22) Date of filing: 30.05.2002
(51) International Patent Classification (IPC)7D21C 11/00, C02F 5/02
// C02F103:28
(86) International application number:
PCT/FI2002/000463
(87) International publication number:
WO 2002/097189 (05.12.2002 Gazette 2002/49)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 30.05.2001 FI 20011131

(71) Applicants:
  • Linde AG
    82049 Höllriegelskreuth (DE)
  • UPM-Kymmene Oyj
    00170 Helsinki (FI)

(72) Inventors:
  • LE NY, Corinne
    F-76530 Grand Couronne (FR)
  • LEINO, Hannu
    FIN-02320 Espoo (FI)
  • PAKARINEN, Heikki
    FIN-37630 Valkeakoski (FI)

(74) Representative: Hjelt, Pia Dorrit Helene et al
Borenius & Co Oy AbTallberginkatu 2 A
00180 Helsinki
00180 Helsinki (FI)

   


(54) A METHOD FOR TREATING CIRCULATION WATERS