Acid wash of red mud (bauxite residue)
US-12528709-B2 · Jan 20, 2026 · US
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by hydrolysing sulfate-containing salts
by hydrolysing sulfate-containing salts · 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 | C01G23/0532 |
| Official title | {by hydrolysing sulfate-containing salts} |
| Display label | by hydrolysing sulfate-containing salts |
| Total patents | 13 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 2 |
| 2022 | 1 |
| 2023 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for the production of titanium dioxide from anatase ore through sulphuric acid digestion, followed by leaching, hydrolysis, and calcination
US-2023373809-A1 · Nov 23, 2023 · US
Coloring ultraviolet protective agent
US-2023357582-A1 · Nov 9, 2023 · US
Acid wash of red mud (bauxite residue)
US-2023051612-A1 · Feb 16, 2023 · US
Titanium dioxide paste, porous semiconductor electrode substrate, photoelectrode, and dye-sensitized solar cell
US-2022084757-A1 · Mar 17, 2022 · US
Titanium oxide particles, and titanium oxide particle dispersion and cosmetics using same
US-10717658-B2 · Jul 21, 2020 · US
Linear Porous Titanium Dioxide Material And Preparation And Use Thereof
US-2020071186-A1 · Mar 5, 2020 · US
Titanium oxide particles, and titanium oxide particle dispersion and cosmetics using same
US-2019161360-A1 · May 30, 2019 · US
Coloring ultraviolet protective agent
US-2019144691-A1 · May 16, 2019 · US
White pigment dispersions
US-9981857-B2 · May 29, 2018 · US
White pigment dispersions
US-2018072585-A1 · Mar 15, 2018 · US
White pigment dispersions
US-9878920-B2 · Jan 30, 2018 · US
White pigment dispersions
US-2016221836-A1 · Aug 4, 2016 · US