Metallurgical plant and method
US-2025271216-A1 · Aug 28, 2025 · US
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Offtakes or separating apparatus for converter waste gases or dust
Offtakes or separating apparatus for converter 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 | C21C5/40 |
| Official title | Offtakes or separating apparatus for converter waste gases or dust |
| Display label | Offtakes or separating apparatus for converter waste gases or dust |
| Total patents | 15 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2016 | 3 |
| 2017 | 1 |
| 2020 | 5 |
| 2021 | 1 |
| 2022 | 1 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for reducing fossil co2 emissions
US-2025229224-A1 · Jul 17, 2025 · US
Method and device for treating primary gas from a metallurgical vessel
US-2025161871-A1 · May 22, 2025 · US
Steelmaking method and associated network of plants
US-2025034668-A1 · Jan 30, 2025 · US
Melting apparatus for the production of steel
US-11338362-B2 · May 24, 2022 · 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
Method and apparatus for the energy-efficient operation of secondary dust removal systems
US-10712753-B2 · Jul 14, 2020 · US
Melting apparatus for the production of steel
US-2020164433-A1 · May 28, 2020 · US
Combined system for producing steel and method for operating the combined system
US-10604816-B2 · Mar 31, 2020 · US
Method and apparatus for the energy-efficient operation of secondary dust removal systems
US-2017003695-A1 · Jan 5, 2017 · US
Combined system for producing steel and method for operating the combined system
US-2016319383-A1 · Nov 3, 2016 · US
Combined system for producing steel and method for operating the combined system
US-2016304978-A1 · Oct 20, 2016 · US
Rotary hearth furnace exhaust gas duct apparatus and method for operating same
US-9310133-B2 · Apr 12, 2016 · US