Surface treated steel sheet for fuel tank
US-2017362732-A1 · Dec 21, 2017 · US
of zinc
of zinc · 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 | C25D3/22 |
| Official title | of zinc |
| Display label | of zinc |
| Total patents | 470 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 37 |
| 2017 | 33 |
| 2018 | 48 |
| 2019 | 35 |
| 2020 | 67 |
| 2021 | 37 |
| 2022 | 43 |
| 2023 | 54 |
| 2024 | 63 |
| 2025 | 32 |
| 2026 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Composition for phosphate film optimizing mn content and a method for phosphate treatment of zn electric-plated steel sheet
US-2017356090-A1 · Dec 14, 2017 · US
Cathode for thin film microbattery
US-9806299-B2 · Oct 31, 2017 · US
High-strength steel sheet, high-strength hot-dip galvanized steel sheet, high-strength hot-dip aluminum-coated steel sheet, and high-strength electrogalvanized steel sheet, and methods for manufacturing same
US-2017306435-A1 · Oct 26, 2017 · US
Electrode wire for electrical discharge machining and manufacturing method for same
US-2017259361-A1 · Sep 14, 2017 · US
Surface-treated electrolytic copper foil and method for wireless charging of flexible printed circuit board
US-9673646-B1 · Jun 6, 2017 · US
Conductive base for forming wiring pattern of collector sheet for solar cells, and method for producing collector sheet for solar cells
US-9666746-B2 · May 30, 2017 · US
Method for Producing an Ultra High Strength Coated or Not Coated Steel Sheet and Obtained Sheet
US-2017145536-A1 · May 25, 2017 · US
Hot-stamped steel
US-2017145532-A1 · May 25, 2017 · US
Plated steel sheet
US-2017107625-A1 · Apr 20, 2017 · US
Steel Armor Wire Coatings
US-2017001415-A1 · Jan 5, 2017 · US
Electrolytic copper plating solution analyzer, and electrolytic copper plating solution analysis method
US-2016377573-A1 · Dec 29, 2016 · US
Surface-treated steel sheet
US-2016368243-A1 · Dec 22, 2016 · US
Metal foil for electromagnetic shielding, electromagnetic shielding material, and shielding cable
US-2016374238-A1 · Dec 22, 2016 · US
Galvanized steel sheet and method for producing the same (as amended)
US-2016369406-A1 · Dec 22, 2016 · US
High-strength steel sheet and process for producing same
US-2016369367-A1 · Dec 22, 2016 · US
Zinc-based electrolyte compositions, and related electrochemical processes and articles
US-2016344056-A1 · Nov 24, 2016 · US
Non-combustible color steel sheet for household appliances and building materials and method for manufacturing same
US-2016312367-A1 · Oct 27, 2016 · US
Thin, flexible microsystem with integrated energy source
US-9472789-B2 · Oct 18, 2016 · US
High purity aluminum coating with zinc sacrificial underlayer for aluminum alloy fan blade protection
US-2016298252-A1 · Oct 13, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C25D3/22?
- CPC C25D3/22 is the Cooperative Patent Classification code for “of zinc.”
- How many patents are filed under CPC C25D3/22 (of zinc)?
- Our database includes 470 publications tagged with this CPC code.
- Is patent activity under CPC C25D3/22 growing?
- Publication counts under this code: 63 in 2024 vs 32 in 2025 (latest complete years).