Method and device for treating primary gas from a metallurgical vessel
US-2025161871-A1 · May 22, 2025 · US
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Removal of waste gases or dust
Removal of waste gases or dust · 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 | C21C5/38 |
| Official title | Removal of waste gases or dust |
| Display label | Removal of waste gases or dust |
| Total patents | 23 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 6 |
| 2017 | 2 |
| 2018 | 1 |
| 2020 | 6 |
| 2021 | 2 |
| 2022 | 1 |
| 2024 | 4 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of manufacturing steel
US-2024229174-A9 · Jul 11, 2024 · US
A method of manufacturing of a steel product in several steelmaking units
US-2024229175-A9 · Jul 11, 2024 · US
A method of manufacturing of a steel product in several steelmaking units
US-2024132984-A1 · Apr 25, 2024 · US
Method of manufacturing steel
US-2024132983-A1 · Apr 25, 2024 · US
Method of introducing a metalliferous feed in an ironmaking process
US-2022316017-A1 · Oct 6, 2022 · US
Plant complex for producing steel and a method for operating the plant complex
US-2021238700-A1 · Aug 5, 2021 · US
Efficient long-service-life blowing method and system for vanadium extraction-decarburization duplex converters
US-10988818-B2 · Apr 27, 2021 · US
Efficient long-service-life blowing method and system for vanadium extraction-decarburization duplex converters
US-2020340070-A1 · Oct 29, 2020 · US
Combined system for producing steel and method for operating the combined system
US-10781498-B2 · Sep 22, 2020 · US
Combined system for producing steel and method for operating the combined system
US-10697031-B2 · Jun 30, 2020 · US
Method for generating synthesis gas in conjunction with a smelting works
US-10697032-B2 · Jun 30, 2020 · US
Plant combination for producing steel and method for operating the plant combination
US-10697030-B2 · Jun 30, 2020 · US
Combined system for producing steel and method for operating the combined system
US-10604816-B2 · Mar 31, 2020 · US
Monitoring system for annular scrubbers
US-10155195-B2 · Dec 18, 2018 · US
Method and apparatus for controlling the pressure in the exhaust gas duct of a converter
US-2017335417-A1 · Nov 23, 2017 · US
Monitoring system for annular scrubbers
US-2017296966-A1 · Oct 19, 2017 · US
Method for generating synthesis gas in conjunction with a smelting works
US-2016348196-A1 · Dec 1, 2016 · US
Plant combination for producing steel and method for operating the plant combination
US-2016348195-A1 · Dec 1, 2016 · US
Combined system for producing steel and method for operating the combined system
US-2016326605-A1 · Nov 10, 2016 · US