Method of producing a phosphatable part from a sheet coated with an aluminum-based coating and a zinc coating
US-12571086-B2 · Mar 10, 2026 · US
by brightening or burnishing · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C25D5/52 |
| Official title | by brightening or burnishing |
| Display label | by brightening or burnishing |
| Total patents | 23 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 1 |
| 2018 | 2 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 3 |
| 2022 | 4 |
| 2023 | 2 |
| 2024 | 1 |
| 2026 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12571086-B2 · Mar 10, 2026 · US
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US-10830695-B2 · Nov 10, 2020 · US
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US-10204804-B2 · Feb 12, 2019 · US
US-2019016481-A1 · Jan 17, 2019 · US
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US-10113958-B2 · Oct 30, 2018 · US
US-2018044774-A1 · Feb 15, 2018 · US