Sherritt Gordon Mines Limited
Patent Owner
Stats
- 0 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- May 23, 1989 most recent publication
Details
- 0 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 237 Total Citation Count
- Dec 22, 1977 Earliest Filing
- 19 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
- No Technology to Display
Top Patents (by citation)
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Recent Publications
- No Recent Publications to Display
Recent Patents
- No Recent Patents to Display
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
4832925 Recovery of zinc from zinc-containing sulphidic materialExpiredJul 18, 83May 23, 89[C22B, C01B, C01G]
4821800 Filtering media for controlling the flow of sand during oil well operationsExpiredDec 01, 87Apr 18, 89[E21B]
4606766 Process for separately recovering gold and silver from solution by carbon adsorptionExpiredMar 04, 85Aug 19, 86[C22B]
4405566 Removal of uranium from sulphate solutions containing molybdenumExpiredOct 01, 80Sep 20, 83[C01G]
4388109 Process for the production of silver powder from silver chloride, sulphate or sulphideExpiredMay 18, 81Jun 14, 83[C22B, B22F]
4331469 Process for the recovery of silver values from silver-containing material which also contains iron and arsenicExpiredAug 19, 80May 25, 82[C22B]
4330508 Removal of selenium (IV) and (VI) from acidic copper sulphate solutionsExpiredOct 24, 80May 18, 82[C01B]
4329320 Method and treatment of a gaseous mixture of ammonia, carbon dioxide and water vaporExpiredDec 22, 77May 11, 82[C01C, C01B, C01G]
4306902 Process for the production of elemental silver from silver chloride or silver sulphateExpiredAug 19, 80Dec 22, 81[C22B, B22F]
4290826 Process for the production of cobalt-rare earth alloy powdersExpiredSep 30, 80Sep 22, 81[H01F]
4272490 Hydrometallurgical process for the treatment of oresExpiredJun 28, 78Jun 09, 81[C22B, C01G, B01F, B01D]
4201748 Process for thermal-activation of chalcopyrite-pyrite concentratesExpiredAug 14, 78May 06, 80[C01G]
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