698638 ALBERTA LTD.

Patent Owner

Watch Compare Add to Portfolio

Stats

Details

Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C22B PRODUCTION OR REFINING OF METALS 622
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF277
 
  
 
C01G COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F 237
 
  
 
B03D FLOTATION; DIFFERENTIAL SEDIMENTATION 114

Top Patents (by citation)

Upgrade to the Professional Level to View Top Patents for this Owner. Learn More

Recent Publications

  • No Recent Publications to Display

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5770170 Recovery of zinc from sulphidic concentratesAug 20, 96Jun 23, 98[C22B, B03D]
5730776 Hydrometallurgical process for the extraction of copper from sulphidic concentratesFeb 27, 96Mar 24, 98[C22B]
5711929 Purification of elemental sulphurApr 03, 95Jan 27, 98[C01B]
5651947 Recovery of zinc from sulphidic concentratesNov 07, 95Jul 29, 97[C22B, C01G]
5468281 Process for the separation of cobalt from nickelNov 17, 94Nov 21, 95[C22B, C01G]
5403571 Purification of elemental sulphurApr 04, 91Apr 04, 95[C01B]
5380354 Recovery of metals from sulphidic materialMay 04, 94Jan 10, 95[C22B]
5344479 Upgrading copper sulphide residues containing nickel and arsenicMar 11, 93Sep 06, 94[C22B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5348713 Recovery of metal values from zinc plant residuesExpiredAug 14, 92Sep 20, 94[C22B]
5171428 Flotation separation of arsenopyrite from pyriteExpiredNov 27, 91Dec 15, 92[B03D]
4832925 Recovery of zinc from zinc-containing sulphidic materialExpiredJul 18, 83May 23, 89[C22B, C01B, C01G]
4632701 Process for the recovery of silver from a residue essentially free of elemental sulphurExpiredMar 04, 85Dec 30, 86[C22B]
4610724 Recovery of gold from refractory auriferous iron-containing sulphidic materialExpiredMar 04, 85Sep 09, 86[C22B]
4606763 Process for the pressure oxidation acid leaching of non-ferrous metal and iron-containing sulphidic materialExpiredMar 04, 85Aug 19, 86[C22B]
4606766 Process for separately recovering gold and silver from solution by carbon adsorptionExpiredMar 04, 85Aug 19, 86[C22B]
4605439 Recovery of gold from refractory auriferous iron-containing sulphidic materialExpiredMar 04, 85Aug 12, 86[C22B]
4594102 Recovery of cobalt and nickel from sulphidic materialExpiredSep 15, 83Jun 10, 86[C22B]
4571262 Recovery of platinum group metals from nickel-copper-iron matteExpiredMar 11, 85Feb 18, 86[C22B, C01G]
4571263 Recovery of gold from refractory auriferous iron-containing sulphidic concentratesExpiredMar 04, 85Feb 18, 86[C22B]
4571264 Recovery of gold from refractory auriferous iron-containing sulphidic oreExpiredMar 04, 85Feb 18, 86[C22B]
4545963 Process for separately recovering zinc and lead values from zinc and lead containing sulphidic oreExpiredSep 26, 83Oct 08, 85[C01G]
4510028 Process for recovering zinc from zinc ferrite materialExpiredJun 28, 83Apr 09, 85[C22B]
4505744 Recovery of zinc from zinc containing sulphidic materialExpiredJun 28, 83Mar 19, 85[C22B, C01B, C01G]
4443253 Recovery of zinc from zinc containing sulphidic materialsExpiredSep 14, 82Apr 17, 84[C22B, C01B, C01G]
4440569 Recovery of zinc from zinc-containing sulphidic materialExpiredFeb 22, 83Apr 03, 84[C22B, C01G]
4423007 Removal of radium from aqueous sulphate solutionsExpiredJul 13, 81Dec 27, 83[C01F]
4406864 Recovery of uranium from material containing iron, arsenic and siliceous matterExpiredOct 01, 80Sep 27, 83[C01G]
4405566 Removal of uranium from sulphate solutions containing molybdenumExpiredOct 01, 80Sep 20, 83[C01G]

View all patents..

Top Inventors for This Owner

Upgrade to the Professional Level to View Top Inventors for this Owner. Learn More

We are sorry but your current selection exceeds the maximum number of comparisons () for this membership level. Upgrade to our Level for up to -1 comparisons!

We are sorry but your current selection exceeds the maximum number of portfolios (0) for this membership level. Upgrade to our Level for up to -1 portfolios!.