BARRICK GOLD CORPORATION

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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 228
 
  
 
C01G COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F 435
 
  
 
B03D FLOTATION; DIFFERENTIAL SEDIMENTATION 312
 
  
 
B01D SEPARATION 2132
 
  
 
C22C ALLOYS 270
 
  
 
B03B SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS 18
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF178
 
  
 
C01F COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS 120
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 154
 
  
 
C09D COATING COMPOSITIONS, e.g. PAINTS, VARNISHES, LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR 191

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9790572 Co-current and counter current resin-in-leach in gold leaching processesAug 05, 13Oct 17, 17[C22B, B01D]
9534273 Alkaline and acid pressure oxidation of precious metal-containing materialsDec 11, 13Jan 03, 17[C22B]
9346062 Separation of copper minerals from pyrite using air-metabisulfite treatmentDec 03, 10May 24, 16[C22B, B03D, B03B, C02F, B01D, C21B]
9194023 Recovery of gold from roaster calcine leach tailingsOct 23, 13Nov 24, 15[C22B, C22C]
9051625 Method for recovering precious metals and copper from leach solutionsJun 15, 12Jun 09, 15[C22B]
8900535 Production of zinc sulphate concentrates from a dilute zinc sulphate solutionJan 07, 11Dec 02, 14[C22B, C01B, C01G, C01F, C21B]
8715389 Co-current and counter current resin-in-leach in gold leaching processesDec 07, 11May 06, 14[C22B]
8623115 Alkaline and acid pressure oxidation of precious metal-containing materialsNov 21, 11Jan 07, 14[C22C]
8262768 Method to improve recovery of gold from double refractory gold oresSep 11, 08Sep 11, 12[C22B]
8262770 Process for controlling acid in sulfide pressure oxidation processesSep 12, 08Sep 11, 12[C22B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
8061888 Autoclave with underflow dividersExpiredMar 14, 07Nov 22, 11[B01J, B01F]
8016912 Process for recovering platinum group metals using reductantsExpiredSep 11, 08Sep 13, 11[C22B]
2009/0158,893 MICROBIAL PRE-TREATMENT OF DOUBLE REFRACTORY GOLD ORESAbandonedNov 24, 08Jun 25, 09[C22B]
7232554 Process for recovering arsenic from acidic aqueous solutionExpiredDec 14, 01Jun 19, 07[C01G]
2007/0039,419 Treatment of reclaim water for use in metals recoveryAbandonedAug 19, 05Feb 22, 07[C22B]
6482250 Nozzle for low pressure flash tanks for ore slurryExpiredFeb 28, 00Nov 19, 02[C22B]
6296773 Removal of boron and fluoride from waterExpiredFeb 07, 00Oct 02, 01[C02F]
6234318 Flotation and cyanidation process controlExpiredMay 04, 99May 22, 01[B03D, B03B]
6039789 Removal of boron and fluoride from waterExpiredMar 27, 98Mar 21, 00[C22B]

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