Methods and systems for purifying metals or metal alloys
US-2025257492-A1 · Aug 14, 2025 · US
Cell construction, e.g. bottoms, walls, cathodes
Cell construction, e.g. bottoms, walls, cathodes · 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 | C25C3/08 |
| Official title | Cell construction, e.g. bottoms, walls, cathodes |
| Display label | Cell construction, e.g. bottoms, walls, cathodes |
| Total patents | 62 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 9 |
| 2017 | 7 |
| 2018 | 7 |
| 2019 | 7 |
| 2020 | 1 |
| 2021 | 8 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 7 |
| 2025 | 3 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cathode for rare earth molten salt electrolysis and an electrolysis system comprising the same
US-2025215593-A1 · Jul 3, 2025 · US
Reactor Device for Converting Powdered Metal Oxides and Conversion System Comprising Same
US-2025135430-A1 · May 1, 2025 · US
Electrodes for aluminum electrolysis cells and methods of making the same
US-2024425378-A1 · Dec 26, 2024 · US
Apparatuses and systems for vertical electrolysis cells
US-12091765-B2 · Sep 17, 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
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
Method for manufacturing recycled aluminum, manufacturing equipment, manufacturing system, recycled aluminum, and processed aluminum product
US-2023392273-A1 · Dec 7, 2023 · US
Method for recycling spent carbon cathode of aluminum electrolysis
US-11697594-B2 · Jul 11, 2023 · US
Method for recycling spent carbon cathode of aluminum electrolysis
US-2023120820-A1 · Apr 20, 2023 · US
Method and apparatus for producing electrolytic aluminum foil
US-11519090-B2 · Dec 6, 2022 · US
Apparatuses and systems for vertical electrolysis cells
US-2022112617-A1 · Apr 14, 2022 · US
Apparatuses and systems for vertical electrolysis cells
US-11203814-B2 · Dec 21, 2021 · US
Device and method for preparing pure titanium by electrolysis-chlorination-electrolysis
US-11180863-B2 · Nov 23, 2021 · US
Copper-coated titanium diboride articles
US-2021355592-A1 · Nov 18, 2021 · US
Systems and methods of electrolytic production of aluminum
US-11078584-B2 · Aug 3, 2021 · US
Composition for making wettable cathode in aluminum smelting
US-11041250-B2 · Jun 22, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C25C3/08?
- CPC C25C3/08 is the Cooperative Patent Classification code for “Cell construction, e.g. bottoms, walls, cathodes.”
- How many patents are filed under CPC C25C3/08 (Cell construction, e.g. bottoms, walls, cathodes)?
- Our database includes 62 publications tagged with this CPC code.
- Is patent activity under CPC C25C3/08 growing?
- Publication counts under this code: 7 in 2024 vs 3 in 2025 (latest complete years).