Metal-resin composite, surface treatment method, and substrate of circuit board for high-frequency and high-speed signal transmission
US-12251862-B2 · Mar 18, 2025 · US
of aluminium
of aluminium · 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 | C25F3/20 |
| Official title | of aluminium |
| Display label | of aluminium |
| Total patents | 49 |
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 | 1 |
| 2016 | 6 |
| 2017 | 7 |
| 2018 | 4 |
| 2019 | 3 |
| 2020 | 9 |
| 2021 | 5 |
| 2022 | 3 |
| 2023 | 4 |
| 2024 | 5 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Surface preparation for electrolytic inorganic finishes
US-2025019856-A1 · Jan 16, 2025 · US
Methods for electropolishing and coating aluminum on air and/or moisture sensitive substrates
US-12129551-B2 · Oct 29, 2024 · US
Metal-resin composite, surface treatment method, and substrate of circuit board for high-frequency and high-speed signal transmission
US-2024342968-A1 · Oct 17, 2024 · US
Electrode assembly and electrochemical machining method
US-2024253141-A1 · Aug 1, 2024 · US
Method of electrochemically machining and electrode
US-2024207959-A1 · Jun 27, 2024 · US
Method of electropolishing
US-11982012-B2 · May 14, 2024 · US
In-situ electrochemical polishing of additively manufactured parts
US-2023264265-A1 · Aug 24, 2023 · US
Chromatic effect light reflective unit
US-2023152498-A1 · May 18, 2023 · US
Method for manufacturing aluminium alloy sheet and electronic device including same
US-2023040926-A1 · Feb 9, 2023 · US
Methods for electropolishing and coating aluminum on air and/or moisture sensitive substrates
US-2023017923-A1 · Jan 19, 2023 · US
Method of electropolishing
US-2022411954-A1 · Dec 29, 2022 · US
Methods for electropolishing and coating aluminum on air and/or moisture sensitive substrates
US-11459658-B2 · Oct 4, 2022 · US
Use of nonafluorobutanesulfonic acid in a low PH etch solution to increase aluminum foil capacitance
US-11230794-B2 · Jan 25, 2022 · US
Methods for electropolishing and coating aluminum on air and/or moisture sensitive substrates
US-2021340688-A1 · Nov 4, 2021 · US
Methods for electropolishing and coating aluminum on air and/or moisture sensitive substrates
US-11142841-B2 · Oct 12, 2021 · US
Preparation of reflective image component and application method thereof
US-11060177-B2 · Jul 13, 2021 · US
Antimicrobial material, layered body, antimicrobial layered body, medical member, antimicrobial material production method, antimicrobial layered body production method, and antimicrobial method
US-2021206136-A1 · Jul 8, 2021 · US
Methods for electropolishing and coating aluminum on air and/or moisture sensitive substrates
US-2021079552-A1 · Mar 18, 2021 · US
Article surface finishing method
US-10821521-B2 · Nov 3, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C25F3/20?
- CPC C25F3/20 is the Cooperative Patent Classification code for “of aluminium.”
- How many patents are filed under CPC C25F3/20 (of aluminium)?
- Our database includes 49 publications tagged with this CPC code.
- Is patent activity under CPC C25F3/20 growing?
- Publication counts under this code: 5 in 2024 vs 2 in 2025 (latest complete years).