Surface-treated steel
US-12559830-B2 · Feb 24, 2026 · US
containing also phosphates
containing also phosphates · 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 | C23C22/36 |
| Official title | containing also phosphates |
| Display label | containing also phosphates |
| Total patents | 59 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 5 |
| 2017 | 5 |
| 2018 | 11 |
| 2019 | 4 |
| 2020 | 4 |
| 2022 | 7 |
| 2023 | 3 |
| 2024 | 6 |
| 2025 | 5 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Surface-treated steel sheet
US-2026049379-A1 · Feb 19, 2026 · US
Metal surface-treating agent, and metal material with coating film and method for manufacturing same
US-12540248-B2 · Feb 3, 2026 · US
Surface-treated steel sheet
US-12509777-B2 · Dec 30, 2025 · US
Pre-coated plated steel sheet and molded product
US-12497519-B2 · Dec 16, 2025 · US
Pre-coated plated steel sheet and molded product
US-12421588-B2 · Sep 23, 2025 · US
Surface-treated steel sheet
US-12331408-B2 · Jun 17, 2025 · US
Surface-treated steel sheet
US-2025109500-A1 · Apr 3, 2025 · US
Surface-treated steel
US-2024327969-A1 · Oct 3, 2024 · US
Metal surface treatment
US-12018176-B2 · Jun 25, 2024 · US
Surface-treated steel sheet
US-2024175140-A1 · May 30, 2024 · US
Pre-coated plated steel sheet and molded product
US-2024158901-A1 · May 16, 2024 · US
Pre-coated plated steel sheet and molded product
US-2024150585-A1 · May 9, 2024 · US
Surface-treated metal material
US-11965249-B2 · Apr 23, 2024 · US
Surface-treated metal sheet
US-2023399750-A1 · Dec 14, 2023 · US
Conversion coating for cans containing hydrogen sulfide producing liquids
US-2023107608-A1 · Apr 6, 2023 · US
Sn-plated steel sheet and method for manufacturing Sn-plated steel sheet
US-11598009-B2 · Mar 7, 2023 · US
Metal Surface-Treating Agent, and Metal Material With Coating Film and Method for Manufacturing Same
US-2022389237-A1 · Dec 8, 2022 · US
Alkaline molybdenum cation and phosphonate-containing cleaning composition
US-11518960-B2 · Dec 6, 2022 · US
Method for specifically adjusting the electrical conductivity of conversion coatings
US-11492707-B2 · Nov 8, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C23C22/36?
- CPC C23C22/36 is the Cooperative Patent Classification code for “containing also phosphates.”
- How many patents are filed under CPC C23C22/36 (containing also phosphates)?
- Our database includes 59 publications tagged with this CPC code.
- Is patent activity under CPC C23C22/36 growing?
- Publication counts under this code: 6 in 2024 vs 5 in 2025 (latest complete years).