Environment-friendly water-based treatment agent for improving phosphatability of high-strength steel
US-2026055511-A1 · Feb 26, 2026 · US
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containing also manganese cations
containing also manganese cations · 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 | C23C22/364 |
| Official title | {containing also manganese cations} |
| Display label | containing also manganese cations |
| Total patents | 24 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 6 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compositions and methods for metal pre-treatment
US-12195575-B2 · Jan 14, 2025 · US
Anticorrosion treatment solution and uses
US-2023193472-A1 · Jun 22, 2023 · US
Method for nickel-free phosphating metal surfaces
US-11643731-B2 · May 9, 2023 · 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
Compositions and methods for metal pre-treatment
US-2022289892-A1 · Sep 15, 2022 · US
Method for nickel-free phosphating metal surfaces
US-11124880-B2 · Sep 21, 2021 · US
Process for selective phosphating of a composite metal construction
US-2021062346-A1 · Mar 4, 2021 · US
Method for nickel-free phosphating metal surfaces
US-10738383-B2 · Aug 11, 2020 · US
Improved method for nickel-free phosphating metal surfaces
US-2020199758-A1 · Jun 25, 2020 · US
Improved method for nickel-free phosphating metal surfaces
US-2019127854-A1 · May 2, 2019 · US
Method for specifically adjusting the electrical conductivity of conversion coatings
US-2018334748-A9 · Nov 22, 2018 · US
Method for specifically adjusting the electrical conductivity of conversion coatings
US-2018112314-A1 · Apr 26, 2018 · US
Method for nickel-free phosphating metal surfaces
US-2018112313-A1 · Apr 26, 2018 · US
Iron-containing cleaner composition
US-2018057773-A1 · Mar 1, 2018 · US
Chemical conversion coated plated steel sheet and method for producing same
US-9890461-B2 · Feb 13, 2018 · US
Method for coating metallic surfaces with an aqueous composition
US-9879349-B2 · Jan 30, 2018 · US
Process for coating metallic surfaces with a passivating agent, the passivating agent and its use
US-2017314137-A1 · Nov 2, 2017 · US
Method for Coating Metal Surfaces, Substrates Coated in This Way, and Use Thereof
US-2017009351-A1 · Jan 12, 2017 · US