Purification of mineral ores using cationic copolymers
US-2026070069-A1 · Mar 12, 2026 · US
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Treatment of the separated residue
Treatment of the separated residue · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C01F7/066 |
| Official title | Treatment of the separated residue |
| Display label | Treatment of the separated residue |
| Total patents | 22 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 2 |
| 2019 | 1 |
| 2020 | 3 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 2 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Acid wash of red mud (bauxite residue)
US-12528709-B2 · Jan 20, 2026 · US
Acid wash of red mud (bauxite residue)
US-12049409-B2 · Jul 30, 2024 · US
Highly dense red mud shields for x-ray and gamma-ray attenuation
US-2024018050-A1 · Jan 18, 2024 · US
Treatment of bauxite residue
US-2023399271-A1 · Dec 14, 2023 · US
Recovery of rare earth elements from acidic solutions
US-2023340639-A1 · Oct 26, 2023 · US
Acid wash of red mud (bauxite residue)
US-2023051612-A1 · Feb 16, 2023 · US
Acid wash of red mud (bauxite residue)
US-2022185688-A1 · Jun 16, 2022 · US
Method for aluminum-enhanced dealkalization of red mud and separation and recovery of aluminum and iron
US-11332380-B2 · May 17, 2022 · US
System and method for desulfurization and denitrification integrated treatment and recycling of flue gas by using red mud
US-10843131-B2 · Nov 24, 2020 · US
Method for aluminum-enhanced dealkalization of red mud and separation and recovery of aluminum and iron
US-2020299145-A1 · Sep 24, 2020 · US
System and method for desulfurization and denitrification integrated treatment and recycling of flue gas by using red mud
US-2020179872-A1 · Jun 11, 2020 · US
Treatment of alkaline bauxite residue
US-10494280-B2 · Dec 3, 2019 · US
Process and plant for purifying red mud
US-10046977-B2 · Aug 14, 2018 · US
Compositions for enhancing production of aluminum hydroxide in an aluminum hydroxide production process
US-9868646-B2 · Jan 16, 2018 · US
Compositions for enhancing production of aluminum hydroxide in an aluminum hydroxide production process
US-2017137298-A1 · May 18, 2017 · US
Methods for enhancing production of aluminum hydroxide in an aluminum hydroxide production process
US-9592456-B2 · Mar 14, 2017 · US
Washing method of goethite-containing red mud
US-9533891-B2 · Jan 3, 2017 · US
Compositions and methods for enhancing production of aluminum hydroxide in an aluminum hydroxide production process
US-2016230248-A1 · Aug 11, 2016 · US
Process and plant for purifying red mud
US-2016152485-A1 · Jun 2, 2016 · US