Assignee
OUTOKUMPU ENG CONTRACT
FI·13 granted patents·234 citations·filing 1993–1996
Top patents by PatentIndex Score
13 records- 0186US5362032AApparatus for feeding gases into a smelting furnaceOUTOKUMPU ENG CONTRACT·Filed 1993·Granted Nov 8, 1994·37 cites·4 claims
- 0277US5628817AMethod for leaching nickel-copper matte employing substantially neutral leaching solutionsOUTOKUMPU ENG CONTRACT·Filed 1995·Granted May 13, 1997·41 cites·17 claims
- 0374US5662871AMethod for extracting metals from large solution flows and apparatus for realizing the sameOUTOKUMPU ENG CONTRACT·Filed 1994·Granted Sep 2, 1997·41 cites·7 claims
- 0467US5549854AMethod and apparatus for forming controlled vortexes and for recirculating gasOUTOKUMPU ENG CONTRACT·Filed 1995·Granted Aug 27, 1996·27 cites·12 claims
- 0561US5585079AMethod for leaching material containing zinc oxide and zinc silicateOUTOKUMPU ENG CONTRACT·Filed 1995·Granted Dec 17, 1996·17 cites·3 claims
- 0660US5358222AApparatus for oxidizing pulverous fuel with two gases having different oxygen contentsOUTOKUMPU ENG CONTRACT·Filed 1993·Granted Oct 25, 1994·19 cites·9 claims
- 0756US5443620AMethod for oxidizing pulverous fuel with two gases having different oxygen contentsOUTOKUMPU ENG CONTRACT·Filed 1994·Granted Aug 22, 1995·8 cites·8 claims
- 0855US5674310AMethod and apparatus for feeding reaction gas and solidsOUTOKUMPU ENG CONTRACT·Filed 1996·Granted Oct 7, 1997·14 cites·10 claims
- 0952US5505434AMethod and apparatus for improving heat and dust recovery in a waste heat boilerOUTOKUMPU ENG CONTRACT·Filed 1994·Granted Apr 9, 1996·8 cites·13 claims
- 1047US5772955AApparatus for suspension smeltingOUTOKUMPU ENG CONTRACT·Filed 1996·Granted Jun 30, 1998·7 cites·3 claims
- 1146US5492554AMethod for producing high-grade nickel matte from at least partly pyrometallurgically refined nickel-bearing raw materialsOUTOKUMPU ENG CONTRACT·Filed 1994·Granted Feb 20, 1996·6 cites·16 claims
- 1243US5565016AMethod for suspension smeltingOUTOKUMPU ENG CONTRACT·Filed 1995·Granted Oct 15, 1996·7 cites·5 claims
- 1336US5574956AMethod and apparatus for treatment sulphidic concentratesOUTOKUMPU ENG CONTRACT·Filed 1993·Granted Nov 12, 1996·2 cites·10 claims
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