Boliden Aktiebolag

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
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
5961940 Method for the treatment of bismuth-containing sulphide ores or concentrates of such oreMar 23, 98Oct 05, 99[C22B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4856716 Gyratory crusher controlExpiredSep 15, 87Aug 15, 89[B02C]
4846582 Polymer dissolverExpiredApr 02, 86Jul 11, 89[B01F]
4780214 Treatment of mercury contaminated lakesExpiredSep 22, 87Oct 25, 88[C02F]
4738762 Electrowinning systemExpiredSep 05, 86Apr 19, 88[C25C]
4734172 Method for selectively recovering lead from complex sulphidic non-ferrous metal concentratesExpiredSep 05, 86Mar 29, 88[C25C]
4732679 Sewage-water purifying processExpiredSep 11, 86Mar 22, 88[C02F]
4725164 Method of excavating a storage complex in rock for storing radioactive wasteExpiredMar 14, 86Feb 16, 88[G21F]
4710277 Method for manufacturing zinc hydrometallurgicallyExpiredDec 02, 86Dec 01, 87[C25C]
4708522 Storage complex for storing radioactive material in rock formationExpiredNov 25, 85Nov 24, 87[G21F]
4708523 Rock cavityExpiredMay 16, 86Nov 24, 87[B63G]
4705562 Method for working-up waste products containing valuable metalsExpiredOct 27, 86Nov 10, 87[C22B]
4686105 Granular product containing magnesium oxide as its main constituentExpiredMar 05, 85Aug 11, 87[C01B]
4681268 Autogenous grinding methodExpiredMar 18, 86Jul 21, 87[B02C]
4663055 Method and apparatus for distributing water purifying chemicalsExpiredDec 04, 84May 05, 87[C02F]
4652181 Storage complex for storing radioactive material in rock formationsExpiredSep 17, 84Mar 24, 87[B63G]
4640751 Method for the purification of gases containing mercury and simultaneous recovery of the mercury in metallic formExpiredOct 04, 85Feb 03, 87[C25C]
4629704 Method for assaying sulphur trioxideExpiredOct 26, 84Dec 16, 86[G01N]
4626279 Method for processing copper smelting materials and the like containing high percentages of arsenic and/or antimonyExpiredMay 14, 84Dec 02, 86[C22B]
4613365 Method for recovering precious metalsExpiredSep 12, 85Sep 23, 86[C22B]
4612171 Method for recovering metal values from materials containing copper and/or precious metalsExpiredSep 27, 84Sep 16, 86[C22B, C01G]

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