Method and apparatus for producing aluminum material
US-12590378-B2 · Mar 31, 2026 · US
Electrolytes
Electrolytes · 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 | C25C3/18 |
| Official title | Electrolytes |
| Display label | Electrolytes |
| Total patents | 30 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 6 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 3 |
| 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.
Methods, systems, and devices for purifying metal-containing material
US-2026002276-A1 · Jan 1, 2026 · US
Methods and systems for purifying metals or metal alloys
US-2025257492-A1 · Aug 14, 2025 · US
Method for producing metallic aluminum and polysilicon with high-silicon aluminum-containing resource
US-2024247391-A1 · Jul 25, 2024 · US
Method for producing metal aluminum by molten salt electrolysis of aluminum oxide
US-2024141529-A1 · May 2, 2024 · US
Co-production of hydrogen, carbon, electricity, and aluminum products with carbon dioxide capture
US-2024101431-A1 · Mar 28, 2024 · US
Method for manufacturing recycled aluminum, manufacturing equipment, manufacturing system, recycled aluminum, and processed aluminum product
US-2023392273-A1 · Dec 7, 2023 · US
Methods of producing aluminum fluoride from cryolite bath
US-2023093860-A1 · Mar 30, 2023 · US
Systems and methods for energy efficient electrolysis cells
US-2023077624-A1 · Mar 16, 2023 · US
Method for transforming a crystal form of an electrolyte containing lithium for aluminum electrolysis
US-11566336-B2 · Jan 31, 2023 · US
Method and apparatus for producing electrolytic aluminum foil
US-11519090-B2 · Dec 6, 2022 · US
Method for producing aluminum
US-11225725-B2 · Jan 18, 2022 · US
Method and apparatus for producing aluminum material
US-2022002892-A1 · Jan 6, 2022 · US
Systems and methods for purifying aluminum
US-11001931-B2 · May 11, 2021 · US
Production method of aluminum using hydrate
US-10927469-B2 · Feb 23, 2021 · US
Aluminum alloy and method for manufacturing aluminum alloy
US-10808300-B2 · Oct 20, 2020 · US
Method for transforming a crystal form of an electrolyte containing lithium for aluminum electrolysis
US-2020308722-A1 · Oct 1, 2020 · US
Production method of aluminum using hydrate
US-2020131656-A1 · Apr 30, 2020 · US
Systems and methods for purifying aluminum
US-2019376197-A1 · Dec 12, 2019 · US
Method for producing aluminum
US-2019330752-A1 · Oct 31, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C25C3/18?
- CPC C25C3/18 is the Cooperative Patent Classification code for “Electrolytes.”
- How many patents are filed under CPC C25C3/18 (Electrolytes)?
- Our database includes 30 publications tagged with this CPC code.
- Is patent activity under CPC C25C3/18 growing?
- Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).