Methods, systems, and devices for purifying metal-containing material
US-2026002276-A1 · Jan 1, 2026 · US
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Refining
Refining · 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 | C25C3/24 |
| Official title | Refining |
| Display label | Refining |
| 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 | 1 |
| 2016 | 5 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 3 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 5 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems and methods of recycling aluminum scrap and associated products
US-2025313979-A1 · Oct 9, 2025 · US
Methods and systems for purifying metals or metal alloys
US-2025257492-A1 · Aug 14, 2025 · US
Electrodes for aluminum electrolysis cells and methods of making the same
US-2024425378-A1 · Dec 26, 2024 · US
Advanced purification cell for aluminum scrap recycling
US-2024295043-A1 · Sep 5, 2024 · US
Titanium diboride products with directing features
US-2024286966-A1 · Aug 29, 2024 · US
Advanced purification cell for aluminum scrap recycling
US-2024287695-A1 · Aug 29, 2024 · US
Power generation apparatus and power generation method
US-12003002-B2 · Jun 4, 2024 · US
Method for manufacturing recycled aluminum, manufacturing equipment, manufacturing system, recycled aluminum, and processed aluminum product
US-2023392273-A1 · Dec 7, 2023 · US
Power generation apparatus and power generation method
US-2022140356-A1 · May 5, 2022 · US
Systems and methods for purifying aluminum
US-11001931-B2 · May 11, 2021 · US
Systems and methods for purifying aluminum
US-2019376197-A1 · Dec 12, 2019 · US
Systems and methods for purifying aluminum
US-10407786-B2 · Sep 10, 2019 · US
Aluminium smelter comprising a compensating electric circuit
US-10344390-B2 · Jul 9, 2019 · US
Electrolytic cell
US-9932681-B2 · Apr 3, 2018 · US
Pot heat exchanger
US-9758883-B2 · Sep 12, 2017 · US
Pot heat exchanger
US-2016258073-A1 · Sep 8, 2016 · US
Systems and methods for purifying aluminum
US-2016230297-A1 · Aug 11, 2016 · US
Aluminium Smelter Comprising a Compensating Electric Circuit
US-2016201208-A1 · Jul 14, 2016 · US
Pot heat exchanger
US-9360145-B2 · Jun 7, 2016 · US