Surface treatment solution composition containing trivalent chromium and inorganic compound, and method for manufacturing hot dip galvanized steel sheet surface-treated using same
US-12221702-B2 · Feb 11, 2025 · US
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containing also trivalent chromium
containing also trivalent chromium · 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 | C23C22/30 |
| Official title | containing also trivalent chromium |
| Display label | containing also trivalent chromium |
| Total patents | 19 |
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 | 1 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 4 |
| 2022 | 3 |
| 2023 | 3 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
High-design sliding member
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Conversion coating for cans containing hydrogen sulfide producing liquids
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Metallic material surface treatment agent, metallic material having surface treatment coating, and manufacturing method therefor
US-11603592-B2 · Mar 14, 2023 · US
Hydrophilic stainless steel and method for manufacturing same
US-2022349062-A1 · Nov 3, 2022 · US
Threaded connection for oil country tubular goods and method for producing threaded connection for oil country tubular goods
US-11408550-B2 · Aug 9, 2022 · US
Process for the manufacturing of a steel strip for packaging and associated equipment
US-11214873-B2 · Jan 4, 2022 · US
Surface treatment solution composition containing trivalent chromium and inorganic compound, and method for manufacturing hot dip galvanized steel sheet surface-treated using same
US-2021388504-A1 · Dec 16, 2021 · US
Electrical steel sheet with insulating film and method for manufacturing the same
US-2021324491-A1 · Oct 21, 2021 · US
Stainless steel for polymer fuel cell separator and method for preparing same
US-11047029-B2 · Jun 29, 2021 · US
High-design sliding member
US-2021130961-A1 · May 6, 2021 · US
Metallic Material Surface Treatment Agent, Metallic Material Having Surface Treatment Coating, and Manufacturing Method Therefor
US-2020362461-A1 · Nov 19, 2020 · US
Threaded Connection for Oil Country Tubular Goods and Method for Producing Threaded Connection for Oil Country Tubular Goods
US-2020072405-A1 · Mar 5, 2020 · US
Process for the Manufacturing of a Steel Strip for Packaging and Associated Equipment
US-2019330744-A1 · Oct 31, 2019 · US
Process for the manufacturing of a steel strip for packaging and associated equipment
US-10337106-B2 · Jul 2, 2019 · US
Process for the Manufacturing of a Steel Strip for Packaging and Associated Equipment
US-2017107626-A1 · Apr 20, 2017 · US
Stainless steel for polymer fuel cell separator and method for preparing same
US-2016160329-A1 · Jun 9, 2016 · US
Stainless steel for polymer fuel cell separator and method for preparing same
US-9290845-B2 · Mar 22, 2016 · US
Steel sheet for container excellent in corrosion resistance
US-8993118-B2 · Mar 31, 2015 · US