Surface-treated steel sheet
US-2024044013-A1 · Feb 8, 2024 · US
with at least one zinc-based layer
with at least one zinc-based layer · 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 | C23C28/3225 |
| Official title | {with at least one zinc-based layer} |
| Display label | with at least one zinc-based layer |
| Total patents | 289 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 7 |
| 2017 | 12 |
| 2018 | 19 |
| 2019 | 14 |
| 2020 | 31 |
| 2021 | 29 |
| 2022 | 36 |
| 2023 | 43 |
| 2024 | 40 |
| 2025 | 36 |
| 2026 | 15 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Coated steel sheet and painted member
US-2019330478-A1 · Oct 31, 2019 · US
Zinc-based plated steel material having excellent sealer adhesion and composition for forming post-treatment film
US-2019315977-A1 · Oct 17, 2019 · US
Surface-treatment solution composition containing trivalent chromium and inorganic compound, zinc-based plated steel sheet surface-treated using same, and method for producing same
US-2019264334-A1 · Aug 29, 2019 · US
Mg-containing Zn alloy coated steel
US-10392686-B2 · Aug 27, 2019 · US
Galvanized steel sheet and method for producing the same
US-10392706-B2 · Aug 27, 2019 · US
Surface-treatment solution for zinc or zinc alloy coated steel sheet, method of producing zinc or zinc alloy coated steel sheet with surface-coating layer, and zinc or zinc alloy coated steel sheet with surface-coating layer
US-2019242018-A1 · Aug 8, 2019 · US
Painted steel sheet provided with a zinc coating
US-2019233934-A1 · Aug 1, 2019 · US
Hot-rolled steel sheet for high strength galvanized steel sheet, having excellent surface quality, and method for producing same
US-10351927-B2 · Jul 16, 2019 · US
Galvanized steel sheet and method for producing the same
US-10351960-B2 · Jul 16, 2019 · US
Surface treated copper foil for high speed printed circuit board products including the copper foil and methods of making
US-2019211466-A1 · Jul 11, 2019 · US
Surface treated copper foil for high speed printed circuit board products including the copper foil and methods of making
US-10337115-B1 · Jul 2, 2019 · US
Steel sheet and method for producing the same
US-2019194775-A1 · Jun 27, 2019 · US
Hot stamping steel and producing method thereof
US-10308996-B2 · Jun 4, 2019 · US
Black coupling member for vehicles, having excellent corrosion resistance and black appearance
US-10240237-B2 · Mar 26, 2019 · US
Plated steel sheet having fine and even plating structure and plated steel sheet manufacturing method
US-2018371598-A1 · Dec 27, 2018 · US
Metal-plastic composite and method for producing such a composite
US-2018326703-A1 · Nov 15, 2018 · US
High-strength hot-dip coated hot-rolled steel sheet and method for manufacturing the same
US-2018305786-A1 · Oct 25, 2018 · US
Steel sheet for hot pressing and process for manufacturing hot pressed member using the steel sheet
US-10100381-B2 · Oct 16, 2018 · US
Mg-CONTAINING Zn ALLOY COATED STEEL
US-2018265955-A1 · Sep 20, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C23C28/3225?
- CPC C23C28/3225 is the Cooperative Patent Classification code for “with at least one zinc-based layer.”
- How many patents are filed under CPC C23C28/3225 (with at least one zinc-based layer)?
- Our database includes 289 publications tagged with this CPC code.
- Is patent activity under CPC C23C28/3225 growing?
- Publication counts under this code: 40 in 2024 vs 36 in 2025 (latest complete years).