Method for coating zinc die-cast parts, multi-layered coating for the protection of zinc die-cast parts, and coated zinc die-cast part
US-2024254631-A1 · Aug 1, 2024 · US
Use of solutions containing trivalent chromium but free of hexavalent chromium
Use of solutions containing trivalent chromium but free of hexavalent chromium · 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 | C23C2222/10 |
| Official title | Use of solutions containing trivalent chromium but free of hexavalent chromium |
| Display label | Use of solutions containing trivalent chromium but free of hexavalent chromium |
| Total patents | 136 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 13 |
| 2017 | 10 |
| 2018 | 9 |
| 2019 | 13 |
| 2020 | 15 |
| 2021 | 17 |
| 2022 | 10 |
| 2023 | 15 |
| 2024 | 10 |
| 2025 | 16 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Metallic Material Surface Treatment Agent, Metallic Material Having Surface Treatment Coating, and Manufacturing Method Therefor
US-2020362461-A1 · Nov 19, 2020 · US
Solution composition containing trivalent chromium for surface treatment of steel sheet, galvanized steel sheet surface-treated with same, and method for manufacturing galvanized steel sheet
US-2020291527-A1 · Sep 17, 2020 · US
Two-step sealing of anodized aluminum coatings
US-10760164-B2 · Sep 1, 2020 · US
Surface treatment composition
US-10745568-B2 · Aug 18, 2020 · US
Anti-corrosion coating method
US-2020199757-A1 · Jun 25, 2020 · US
Additive for quality determination of conversion coatings
US-2020109295-A1 · Apr 9, 2020 · US
Threaded Connection for Oil Country Tubular Goods and Method for Producing Threaded Connection for Oil Country Tubular Goods
US-2020072405-A1 · Mar 5, 2020 · US
Sealing process for an anodized aluminum-alloy surface
US-2020063284-A1 · Feb 27, 2020 · US
Chromating method and component obtained by this method
US-2020040461-A1 · Feb 6, 2020 · US
Organic resin-coated plated steel sheet
US-2020032399-A1 · Jan 30, 2020 · US
Sealing process for an anodized aluminum-alloy surface
US-10480093-B2 · Nov 19, 2019 · US
Process for the Manufacturing of a Steel Strip for Packaging and Associated Equipment
US-2019330744-A1 · Oct 31, 2019 · US
Solution composition for steel sheet surface treatment, zinc-based plated steel sheet surface-treated with same, and manufacturing method therefor
US-2019264333-A1 · Aug 29, 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
Coated substrate having corrosion resistant coating
US-2019233943-A1 · Aug 1, 2019 · US
Process for the manufacturing of a steel strip for packaging and associated equipment
US-10337106-B2 · Jul 2, 2019 · US
Systems and Methods for Treating a Metal Substrate
US-2019169752-A1 · Jun 6, 2019 · US
Method for making corrosion resistant coating
US-10294570-B2 · May 21, 2019 · US
Two-step sealing of anodized aluminum coatings
US-2019127860-A1 · May 2, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C23C2222/10?
- CPC C23C2222/10 is the Cooperative Patent Classification code for “Use of solutions containing trivalent chromium but free of hexavalent chromium.”
- How many patents are filed under CPC C23C2222/10 (Use of solutions containing trivalent chromium but free of hexavalent chromium)?
- Our database includes 136 publications tagged with this CPC code.
- Is patent activity under CPC C23C2222/10 growing?
- Publication counts under this code: 10 in 2024 vs 16 in 2025 (latest complete years).