Mintek
Records under this name other than the patents Mintek holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned. None of them is counted in the 7 patents it holds.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,641,711 | Metal vapour condensation and liquid metal withdrawal Lapsed on the fee record Ended Jan 5, 2022 · From the USPTO record | Lapsed on the fee record | Ended Jan 5, 2022 | From the USPTO record |
| US 6,699,302 | Treatment of metal sulphide concentrates by roasting and electrically stabilized open-arc furnace smelt reduction Term ended Term ended Nov 29, 2021 · From the USPTO record | Term ended | Term ended Nov 29, 2021 | From the USPTO record |
| US 9,784,500 | Measurement of electrical variables on a DC furnace Lapsed on the fee record Ended Oct 10, 2021 · From the USPTO record | Lapsed on the fee record | Ended Oct 10, 2021 | From the USPTO record |
| US 6,277,341 | Process for the rapid leaching of chalcopyrite in the absence of catalysts Term ended Term ended Nov 24, 2019 · From the USPTO record | Term ended | Term ended Nov 24, 2019 | From the USPTO record |
| US 6,287,362 | Production of metal lumps and apparatus therefor Term ended Term ended Jun 22, 2018 · From the USPTO record | Term ended | Term ended Jun 22, 2018 | From the USPTO record |
| US 8,104,484 | Smoking Articles and Smoking Materials Formerly held Lapsed on the fee record Ended Jan 31, 2016 · High confidence | Lapsed on the fee record | Ended Jan 31, 2016 | High confidence |
| US 6,280,630 | Process for the treatment of effluent streams Lapsed on the fee record Ended Aug 28, 2005 · From the USPTO record | Lapsed on the fee record | Ended Aug 28, 2005 | From the USPTO record |
| US 4,699,653 | Thermal production of magnesium Term ended Term ended no later than Oct 13, 2007 · Low confidence | Term ended | Term ended no later than Oct 13, 2007 | Low confidence |
| US 4,923,615 | Fluid/solid contacting columns Term ended Term ended no later than May 8, 2010 · Low confidence | Term ended | Term ended no later than May 8, 2010 | Low confidence |
| US 5,023,060 | Recovery of gold by a carbon-in-pulp process Term ended Term ended no later than Jun 11, 2011 · Low confidence | Term ended | Term ended no later than Jun 11, 2011 | Low confidence |