Performance enhancement of sensors through surface processing
US-2019381779-A1 · Dec 19, 2019 · US
for etching aluminium or alloys thereof
for etching aluminium or alloys thereof · 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 | C23F1/20 |
| Official title | for etching aluminium or alloys thereof |
| Display label | for etching aluminium or alloys thereof |
| Total patents | 184 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 13 |
| 2017 | 10 |
| 2018 | 13 |
| 2019 | 24 |
| 2020 | 21 |
| 2021 | 25 |
| 2022 | 13 |
| 2023 | 21 |
| 2024 | 18 |
| 2025 | 11 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Etchant composition, method for etching multilayered film, and method for preparing display device
US-10501853-B2 · Dec 10, 2019 · US
Metal-resin composite structure, metal member, and manufacturing method of metal member
US-2019299503-A1 · Oct 3, 2019 · US
Indirect surface finishing during hybrid manufacturing
US-10427246-B2 · Oct 1, 2019 · US
Indirect surface finishing during hybrid manufacturing
US-2019255655-A1 · Aug 22, 2019 · US
Pretreatment of Thick-Film Aluminum Electrode for Metal Plating
US-2019189312-A1 · Jun 20, 2019 · US
Method for reducing surface roughness
US-2019169753-A1 · Jun 6, 2019 · US
Housing and method for fabrication thereof and application thereof
US-2019159352-A1 · May 23, 2019 · US
Surface treatment method of aluminum for bonding different materials
US-2019127857-A1 · May 2, 2019 · US
Reactive quenching solutions and methods of use
US-2019119798-A1 · Apr 25, 2019 · US
Continuous coil pretreatment process
US-2019085463-A1 · Mar 21, 2019 · US
Connector for non-cylindrical composite tubing and methods for making the same
US-10233953-B1 · Mar 19, 2019 · US
Etching method, article manufacturing method, and etching apparatus
US-10224209-B2 · Mar 5, 2019 · US
Method for treating a surface and device implemented
US-10214444-B2 · Feb 26, 2019 · US
Method for manufacturing circuit board and circuit board
US-10206287-B2 · Feb 12, 2019 · US
Method for smoothing surface roughness of components
US-2018371623-A1 · Dec 27, 2018 · US
Metal etchant compositions and methods of fabricating a semiconductor device using the same
US-10155903-B2 · Dec 18, 2018 · US
Method for producing electrode for aluminum electrolytic capacitor
US-2018350526-A1 · Dec 6, 2018 · US
Method for smut removal during stripping of coating
US-10125425-B2 · Nov 13, 2018 · US
Aluminum alloy housing and preparation method therefor
US-2018310425-A1 · Oct 25, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C23F1/20?
- CPC C23F1/20 is the Cooperative Patent Classification code for “for etching aluminium or alloys thereof.”
- How many patents are filed under CPC C23F1/20 (for etching aluminium or alloys thereof)?
- Our database includes 184 publications tagged with this CPC code.
- Is patent activity under CPC C23F1/20 growing?
- Publication counts under this code: 18 in 2024 vs 11 in 2025 (latest complete years).