Assignee
MINTEK
ZA·21 granted patents·3 pending applications·311 citations·filing 1989–2021
Top patents by PatentIndex Score
24 records- 0190US6699302B1Treatment of metal sulphide concentrates by roasting and electrically stabilized open-arc furnace smelt reductionMINTEK·Filed 2000·Granted Mar 2, 2004·44 cites·19 claims
- 0280US6280630B1Process for the treatment of effluent streamsMINTEK·Filed 1998·Granted Aug 28, 2001·56 cites·22 claims
- 0378US10047412B2Gold recovery from carbonMINTEK·Filed 2016·Granted Aug 14, 2018·4 cites·8 claims
- 0478US7641711B2Metal vapour condensation and liquid metal withdrawalMINTEK·Filed 2006·Granted Jan 5, 2010·6 cites·7 claims
- 0576US5114700AElectrically heated fluidized bed reactor and processes employing sameMINTEK·Filed 1990·Granted May 19, 1992·39 cites·17 claims
- 0673US6277341B1Process for the rapid leaching of chalcopyrite in the absence of catalystsMINTEK·Filed 1997·Granted Aug 21, 2001·39 cites·7 claims
- 0763US9784500B2Measurement of electrical variables on a DC furnaceMINTEK·Filed 2014·Granted Oct 10, 2017·1 cites·6 claims
- 0863US5134169AGold selective ion exchange resinsMINTEK·Filed 1989·Granted Jul 28, 1992·26 cites·6 claims
- 0955US5395583AStainless steel compositionMINTEK·Filed 1993·Granted Mar 7, 1995·16 cites·9 claims
- 1053US2023416150A1Binder for an agglomeration processMINTEK·Filed 2021·Application pending·0 cites
- 1152US10710911B2Effluent treatment process—pH refinement for sulphate removalMINTEK·Filed 2016·Granted Jul 14, 2020·0 cites·4 claims
- 1249US6287362B1Production of metal lumps and apparatus thereforMINTEK·Filed 1996·Granted Sep 11, 2001·20 cites·34 claims
- 1346US5132024AHydro-cyclone underflow monitor based on underflow slurry stream shapeMINTEK·Filed 1990·Granted Jul 21, 1992·21 cites·7 claims
- 1441US10676381B2Effluent treatment process for sulphate removalMINTEK·Filed 2016·Granted Jun 9, 2020·0 cites·20 claims
- 1540US10894998B2Processing of iron-rich rare earth bearing oresMINTEK·Filed 2017·Granted Jan 19, 2021·0 cites·7 claims
- 1639US5248442AMethod and apparatus for measuring shade of hydrocyclone underflowMINTEK·Filed 1991·Granted Sep 28, 1993·15 cites·43 claims
- 1738US12428324B2Water balance improvement in an effluent treatment process for sulphate removalMINTEK·Filed 2020·Granted Sep 30, 2025·0 cites·2 claims
- 1838US5575303AProcess for controlling a series of flotation cellsMINTEK·Filed 1994·Granted Nov 19, 1996·9 cites·9 claims
- 1938US2022332620A1Simplified sulphate removal for effluent treatmentMINTEK·Filed 2020·Application pending·0 cites
- 2036US5317592ADirect resistance heating electrical furnace assembly and method of operating sameMINTEK·Filed 1992·Granted May 31, 1994·14 cites·19 claims
- 2135US12023687B2Froth flotation apparatusMINTEK·Filed 2019·Granted Jul 2, 2024·0 cites·16 claims
- 2230US2019048271A1Coal gasificationMINTEK·Filed 2017·Application pending·0 cites
- 2315US5503691AThe aesthetic enhancement or modification of articles or components made of non-ferrous metalsMINTEK·Filed 1994·Granted Apr 2, 1996·0 cites·11 claims
- 2413US5045280AIntermetallic compoundsMINTEK·Filed 1990·Granted Sep 3, 1991·1 cites·9 claims
Join the waitlist — get patent alerts
Get an alert when MINTEK files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →