OUTOKUMPU OY, A CORP OF FINLAND

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01F MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING 240
 
  
 
B01D SEPARATION 1133
 
  
 
C22B PRODUCTION OR REFINING OF METALS 127

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5188808 Method for mixing liquid, solids and gas and for simultaneously separating gas or gas and solids from the liquidMar 26, 91Feb 23, 93[B01F]
5185081 Method and apparatus for mixing and separating two liquid phases while preventing aeration and emulsions using a mixer-settlerMar 26, 91Feb 09, 93[B01F, B01D]
5120353 Hydrometallurgic method for processing raw materials containing zinc sulphideFeb 13, 91Jun 09, 92[C22B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5182087 Method for mixing two liquids or liquid and solid material together, and for simultaneously separating another liquid or solid from the liquidExpiredMar 26, 91Jan 26, 93[B01F]
5143600 Apparatus for feeding air into a flotation cellExpiredJan 09, 91Sep 01, 92[B03D, B01F]
5137337 Method for working steeply dipping vein ores with vertically downwards propagating pillarsExpiredApr 29, 91Aug 11, 92[F21C]
5102452 Method for the treatment and production of free-flowing WC-Ni-Co powdersExpiredMay 14, 90Apr 07, 92[B22F]
5039347 Method for cleaning the filter plates of a suction drierExpiredJun 20, 90Aug 13, 91[B01D]
5009870 Method for removing sulphur and nitrogen compounds from gasExpiredDec 12, 89Apr 23, 91[C01B, B01J]
4894129 Method and apparatus for positioning sheet-like objectsExpiredJan 20, 88Jan 16, 90[C25D]
4876870 Method for manufacturing tubesExpiredMar 23, 88Oct 31, 89[B21B]
4806213 Method and apparatus for stripping electrolytic precipitate from supporting structuresExpiredNov 17, 87Feb 21, 89[C25D]
4786187 Method for dispersing two phases in extraction and apparatus for realizing the methodExpiredNov 13, 86Nov 22, 88[B01F]
4747694 Method for dispersing two phases in a solvent extraction process and a pump mixer for realizing the methodExpiredNov 13, 86May 31, 88[B01F]
4648973 Way to oxidize sludge with high solid matter contentExpiredFeb 22, 84Mar 10, 87[C02F]
4599108 Method for processing sulphide concentrates and sulphide ores into raw materialExpiredJul 10, 85Jul 08, 86[C22B]
4571196 Way to prolong the service life of proportional countersExpiredFeb 01, 84Feb 18, 86[H01J]
4561884 Apparatus for removal of impurity components from sulphidic and metallized molten copper mattesExpiredSep 25, 81Dec 31, 85[C22B]
4548765 Method for dispersing gas in a solid-containing liquid, and an apparatus for itExpiredAug 16, 83Oct 22, 85[B01F]
4520267 Method and apparatus for analyzing ore by means of gamma radiationExpiredSep 11, 81May 28, 85[G01N]
4490170 Method for forming a directional and controlled suspension spray of a pulverous material and a reaction gasExpiredNov 08, 82Dec 25, 84[C22B]
4483827 Hydrometallurgical process for the recovery of valuable metals from sulfidic, silicate-containing raw materialsExpiredJul 08, 82Nov 20, 84[C01G]
4465512 Procedure for producing lead bullion from sulphide concentrateExpiredJan 27, 83Aug 14, 84[C22B]

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