(19)

(11)

EP 1 511 868 A1

(12)

(43) Date of publication: 09.03.2005 Bulletin 2005/10 (21) Application number: 03757080.1 (22) Date of filing: 02.06.2003

(51) International Patent Classification (IPC)7: C22B 15/00 (86) International application number: PCT/FI2003/000432 (87) International publication number: WO 2003/104504 (18.12.2003 Gazette 2003/51)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 11.06.2002 FI 20021114 (71) Applicant: Outokumpu Oyj 02200 Espoo (FI)	(72) Inventors: HANNIALA, Pekka FIN-02730 Espoo (FI) KOJO, Ilkka FIN-02400 Kirkkonummi (FI) (74) Representative: Zipse + Habersack  Wotanstrasse 64 80639 München 80639 München (DE)