Method for treating a part made of iron alloy for improving the anti-corrosion properties thereof
US-2025171906-A1 · May 29, 2025 · US
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more than one element being applied in more than one step
more than one element being applied in more than one step · 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 | C23C8/58 |
| Official title | more than one element being applied in more than one step |
| Display label | more than one element being applied in more than one step |
| Total patents | 18 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 1 |
| 2023 | 1 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for treating waste waters and residue sludge by means of carbonation in a chemical installation for nitridation in a molten salt bath
US-2025154033-A1 · May 15, 2025 · US
Method for treating waste waters and residue sludge by means of carbonation and decarbonation in a chemical installation for nitridation in a molten salt bath
US-2025122105-A1 · Apr 17, 2025 · US
Carbo-nitriding process for martensitic stainless steel and stainless steel article having improved corrosion resistance
US-11667999-B2 · Jun 6, 2023 · US
Thermoelectric alloy, method for producing the same and thermoelectric alloy composite
US-10975456-B2 · Apr 13, 2021 · US
Coating system for tubular gripping components
US-10876196-B2 · Dec 29, 2020 · US
Method for surface treatment of a steel component by nitriding or nitrocarburising, oxidising and then impregnating
US-10774414-B2 · Sep 15, 2020 · US
Thermoelectric alloy, method for producing the same and thermoelectric alloy composite
US-2020123637-A1 · Apr 23, 2020 · US
Coating system for tubular gripping components
US-2019136362-A1 · May 9, 2019 · US
Ferritic nitrocarburized vehicle component and methods of making and using the same
US-2019017161-A1 · Jan 17, 2019 · US
Carbo-nitriding process for martensitic stainless steel and stainless steel article having improved corrosion resistance
US-2018320262-A1 · Nov 8, 2018 · US
Carbo-nitriding process for martensitic stainless steel and stainless steel article having improved corrosion resistance
US-10053763-B2 · Aug 21, 2018 · US
Method for surface treatment of a steel component by nitriding or nitrocarburising, oxidising and then impregnating
US-2017349997-A1 · Dec 7, 2017 · US
Brake rotor
US-9651105-B2 · May 16, 2017 · US
Friction material and methods of making and using the same
US-9581211-B2 · Feb 28, 2017 · US
Titanium material and method for producing titanium material
US-9487882-B2 · Nov 8, 2016 · US
Friction material and methods of making and using the same
US-2015159710-A1 · Jun 11, 2015 · US
Production of BN-Composite Materials
US-2015144481-A1 · May 28, 2015 · US