Inventor · disambiguated record
Stig-Erik Hultholm
Also filed as: HULTHOLM STIG E · HULTHOLM STIG-ERIK
38 granted patents·2 pending applications·739 citations·filing 1978–2011
98Inventor score
Top patents by PatentIndex Score
40 records- 0192US5185081AMethod and apparatus for mixing and separating two liquid phases while preventing aeration and emulsions using a mixer-settlerOUTOKUMPU OY·Filed 1991·Granted Feb 9, 1993·95 cites·10 claims
- 0292US4648973AWay to oxidize sludge with high solid matter contentOUTOKUMPU OY·Filed 1984·Granted Mar 10, 1987·71 cites·3 claims
- 0388US4548765AMethod for dispersing gas in a solid-containing liquid, and an apparatus for itOUTOKUMPU OY·Filed 1983·Granted Oct 22, 1985·58 cites·10 claims
- 0484US6083400AMethod and apparatus for recirculating a heavier solution from the separation part of two separable solutions into a mixing unitOUTOKUMPU TECHNOLOGY OYJ·Filed 1997·Granted Jul 4, 2000·35 cites·14 claims
- 0578US7749302B2Method for the hydrometallurgical treatment of sulfide concentrate containing several valuable metalsOUTOTEC OYJ·Filed 2005·Granted Jul 6, 2010·3 cites·19 claims
- 0678US5188808AMethod for mixing liquid, solids and gas and for simultaneously separating gas or gas and solids from the liquidOUTOKUMPU OY·Filed 1991·Granted Feb 23, 1993·52 cites·6 claims
- 0777US8020710B2Method and equipment for liquid-liquid extractionOUTOTEC OYJ·Filed 2009·Granted Sep 20, 2011·2 cites·19 claims
- 0877US5628817AMethod for leaching nickel-copper matte employing substantially neutral leaching solutionsOUTOKUMPU ENG CONTRACT·Filed 1995·Granted May 13, 1997·41 cites·17 claims
- 0976US4628391AMethod for dispersing two phases in liquid-liquid extractionOUTOKUMPU OY·Filed 1984·Granted Dec 9, 1986·32 cites·3 claims
- 1075US9352290B2Device and method for dispersing two solutions in each other in solvent extractionLILJA LAUNO·Filed 2011·Granted May 31, 2016·3 cites·16 claims
- 1174US6132615AMethod and apparatus for creating controlled flows in two mutually separable solutionsOUTOKUMPU TECHNOLOGY OYJ·Filed 1997·Granted Oct 17, 2000·45 cites·5 claims
- 1273US7811534B2Method for the treatment of copper-bearing materialsOUTOTEC OYJ·Filed 2006·Granted Oct 12, 2010·2 cites·21 claims
- 1373US7390468B2Extraction processOUTOTEC OYJ·Filed 2002·Granted Jun 24, 2008·18 cites·10 claims
- 1473US5182087AMethod for mixing two liquids or liquid and solid material together, and for simultaneously separating another liquid or solid from the liquidOUTOKUMPU OY·Filed 1991·Granted Jan 26, 1993·40 cites·9 claims
- 1571US7390420B2Method and equipment for compressing a dispersion in liquid-liquid extractionOUTOTEC OYJ·Filed 2003·Granted Jun 24, 2008·16 cites·23 claims
- 1670US6706186B1Method for extracting copper from an aqueous solutionOUTOKUMPU OY·Filed 2000·Granted Mar 16, 2004·7 cites·18 claims
- 1769US7465402B2Method and equipment for guiding dispersion in liquid-liquid extractionOUTOTEC OYJ·Filed 2003·Granted Dec 16, 2008·6 cites·35 claims
- 1869US4220627AProcess for the treatment of raw materials containing arsenic and metalOUTOKUMPU OY·Filed 1978·Granted Sep 2, 1980·12 cites·10 claims
- 1968US6267900B1Method and apparatus for adjusting the boundary surface between two controllably flowing and mutually separable and for conducting both solutions out of the separation partOUTOKUMPU OY·Filed 1997·Granted Jul 31, 2001·22 cites·12 claims
- 2067US7517461B2Method and equipment to control separation of a dispersion liquid-liquid extractionOUTOTEC OYJ·Filed 2003·Granted Apr 14, 2009·13 cites·24 claims
- 2167US6039790AMethod for recovering nickel hydrometallurgically from two different nickel mattesOUTOKUMPU OY·Filed 1996·Granted Mar 21, 2000·17 cites·18 claims
- 2264US6176608B1Method and apparatus for conducting the two solutions of liquid-liquid extraction, mixed into dispersion, in a controlled fashion into the separation partOUTOKUMPU OY·Filed 1997·Granted Jan 23, 2001·14 cites·12 claims
- 2362US4452762AHydrometallurgical process for the recovery of valuable metals from metallic alloysOUTOKUMPU OY·Filed 1981·Granted Jun 5, 1984·13 cites·3 claims
- 2459US6432370B1Method and apparatus for controllably conducting a solution, obtained from liquid-liquid extraction of two solutions and mixed into dispersion, to a wide settlerOUTOKUMPU OY·Filed 1998·Granted Aug 13, 2002·15 cites·32 claims
- 2559US5779997AMethod 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
- 2657US7547348B2Method for the recovery of metals using chloride leaching and extractionOUTOTEC OYJ·Filed 2003·Granted Jun 16, 2009·2 cites·11 claims
- 2757US5248485AMethod for mixing liquid, solids and gas and for simultaneously separating gas or gas and solids from the liquidOUTOKUMPU OY·Filed 1992·Granted Sep 28, 1993·21 cites·3 claims
- 2856US4786187AMethod for dispersing two phases in extraction and apparatus for realizing the methodOUTOKUMPU OY·Filed 1986·Granted Nov 22, 1988·18 cites·15 claims
- 2955US7678275B2Method and equipment for liquid-liquid extractionOUTOTEC OYJ·Filed 2004·Granted Mar 16, 2010·4 cites·9 claims
- 3055US7070174B2Mixing apparatus for mixing gas in a closed reactorOUTOKUMPU OY·Filed 2001·Granted Jul 4, 2006·6 cites·7 claims
- 3153US4393029AProcess for the production of an iron-free chronium (III) compoundOUTOKUMPU OY·Filed 1981·Granted Jul 12, 1983·7 cites·4 claims
- 3251US4721571AMethod for dispersing two phases and for setting the dispersed phasesOUTOKUMPU OY·Filed 1983·Granted Jan 26, 1988·13 cites·6 claims
- 3350US7247282B2Method for the removal of metals from an aqueous solution using lime precipitationOUTOTEC OYJ·Filed 2002·Granted Jul 24, 2007·2 cites·18 claims
- 3447US2010229687A1Method and mixer apparatus for mixing gas into slurry in a closed reactorOUTOTEC OYJ·Filed 2007·Application pending·0 cites
- 3546US4740239AProcess for exploitation of low grade oxidic and iron-bearing complex ores or concentratesOUTOKUMPU OY·Filed 1986·Granted Apr 26, 1988·6 cites·3 claims
- 3643US2007029254A1Method and equipment for liquid-liquid extractionOUTOKUMPU OY·Filed 2004·Application pending·0 cites
- 3742US8926924B2Extraction processNYMAN BROR·Filed 2011·Granted Jan 6, 2015·0 cites·23 claims
- 3839US9322079B2Method for recovering copper from a copper sulphide oreHULTHOLM STIG-ERIK·Filed 2007·Granted Apr 26, 2016·0 cites·21 claims
- 3939US4747694AMethod for dispersing two phases in a solvent extraction process and a pump mixer for realizing the methodOUTOKUMPU OY·Filed 1986·Granted May 31, 1988·8 cites·12 claims
- 4039US4565660AMethod for dispersing gas, for mixing a pulverous solid into a liquid to form a suspension, and for maintaining the obtained good solid-gas-liquid suspension in the reactorOUTOKUMPU OY·Filed 1983·Granted Jan 21, 1986·8 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →