Metals recovery from spent supported catalyst
US-12577125-B2 · Mar 17, 2026 · US
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Blast roasting
Blast roasting · 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 | C22B1/04 |
| Official title | Blast roasting |
| Display label | Blast roasting |
| Total patents | 22 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 3 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 4 |
| 2024 | 3 |
| 2025 | 1 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of purifying sodium bromide from waste circuit boards pyrolysis coke
US-12534376-B2 · Jan 27, 2026 · US
Electrode material leaching method and method for separating cobalt and nickel
US-2025215527-A1 · Jul 3, 2025 · US
Production method for valuable metals
US-2024318281-A1 · Sep 26, 2024 · US
Method for producing valuable metal
US-2024240281-A1 · Jul 18, 2024 · US
Process for obtaining vanadium oxide from a gasifier slag field
US-11945728-B2 · Apr 2, 2024 · US
Ironmaking feedstock
US-11851725-B2 · Dec 26, 2023 · US
Metals recovery from spent supported catalyst
US-2023257280-A1 · Aug 17, 2023 · US
Metals recovery from spent catalyst
US-2023160037-A1 · May 25, 2023 · US
Ironmaking feedstock
US-2023049624-A1 · Feb 16, 2023 · US
Method of purifying sodium bromide from waste circuit boards pyrolysis coke
US-2022356067-A1 · Nov 10, 2022 · US
Process for obtaining vanadium oxide from a gasifier slag field
US-2021017038-A1 · Jan 21, 2021 · US
Ironmaking feedstock
US-2020347467-A1 · Nov 5, 2020 · US
Multi-stage suspension magnetizing roasting-magnetic separation system device and method for refractory iron ore
US-10543491-B2 · Jan 28, 2020 · US
Multi-stage suspension magnetizing roasting-magnetic separation system device and method for refractory iron ore
US-2018361395-A1 · Dec 20, 2018 · US
Method and plant for processing roasted pyrites
US-10125409-B2 · Nov 13, 2018 · US
Method and plant for producing iron from roasted pyrites
US-10125403-B2 · Nov 13, 2018 · US
Method for improving quality of titanium-containing feedstock
US-9803261-B2 · Oct 31, 2017 · US
Method and plant for producing iron from roasted pyrites
US-2016102375-A1 · Apr 14, 2016 · US
Method and plant for processing roasted pyrites
US-2016083817-A1 · Mar 24, 2016 · US