Mintek
Randburg, ZA· latest recorded location
Mintek is named on 22 US grants and 12 published applications in this corpus. Its most frequent classification is C22B (Production and refining of metals).
- Granted patents
- 22
- Published applications
- 12
- Inventors
- 45
- Granted in 2026 so far
- 1
- Most recent grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 2 |
| 2017 | 1 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 3 |
| 2020 | 2 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 3 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
| 2026 | 1 | 1 |
By publication year. 2026 runs to 8 Oct.
Technology areas
Share of 34 documents
- C22BProduction and refining of metals11
- Y02PLow-carbon manufacturing10
- C02FTreatment of water, waste water, sewage, or sludge9
- C01GCompounds containing metals not covered by subclasses c01d or c01f5
- B01JChemical or physical processes3
- C01FCompounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium3
- C04BLime, magnesia3
- F27BFurnaces, kilns, ovens or retorts in general3
- F27DDetails or accessories of furnaces, kilns, ovens or retorts, in so far3
- H05BElectric heating3
Recent patents
- Binder for an agglomeration process8 Sep 2026US 12,729,161 B2
- Water balance improvement in an effluent treatment process for sulphate removal30 Sep 2025US 12,428,324 B2
- Froth flotation apparatus2 Jul 2024US 12,023,687 B2
- Processing of iron-rich rare earth bearing ores19 Jan 2021US 10,894,998 B2
- Effluent treatment process—pH refinement for sulphate removal14 Jul 2020US 10,710,911 B2
- Heap leaching of copper sulphide ores10 Sep 2026US 2026/0265862 A1
- Binder for an agglomeration process28 Dec 2023US 2023/0416150 A1
- Simplified sulphate removal for effluent treatment20 Oct 2022US 2022/0332620 A1
- Water balance improvement ln an effluent treatment process for sulphate removal6 Oct 2022US 2022/0315459 A1
- A composite material and a method to prepare the composite5 May 2022US 2022/0135454 A1
Most cited
By later US patents
- Process for the treatment of effluent streams19US 6,280,630 B12001
- Electrically heated fluidized bed reactor and processes employing same18US 5,114,700 A1992
- Treatment of metal sulphide concentrates by roasting and electrically stabilized open-arc furnace smelt reduction13US 6,699,302 B12004
- Process for the rapid leaching of chalcopyrite in the absence of catalysts12US 6,277,341 B12001
- Hydro-cyclone underflow monitor based on underflow slurry stream shape10US 5,132,024 A1992