Assignee
OUTOKUMPU HARJAVALTA METALS OY
FI·3 granted patents·33 citations·filing 1993–1995
Top patents by PatentIndex Score
3 records- 0159US5779997AMethod for preventing the formation of jarosite and ammonium and alkali based double salts in solvent extraction circuits connected to acidic leaching processesOUTOKUMPU HARJAVALTA METALS OY·Filed 1995·Granted Jul 14, 1998·12 cites·4 claims
- 0250US5385600AMethod for beneficiating nickel sulfide concentrates and corresponding mixtures, unsuitable for smeltingOUTOKUMPU HARJAVALTA METALS OY·Filed 1993·Granted Jan 31, 1995·11 cites·7 claims
- 0344US5332414AMethod for producing high-grade nickel matte and metallized sulfide matteOUTOKUMPU HARJAVALTA METALS OY·Filed 1993·Granted Jul 26, 1994·10 cites·2 claims
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