Blast furnace operation method
US-12378615-B2 · Aug 5, 2025 · US
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Iron hot-blast stoves
Iron hot-blast stoves · 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 | C21B9/08 |
| Official title | Iron hot-blast stoves |
| Display label | Iron hot-blast stoves |
| Total patents | 5 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears stable based on the most recent years.
| Year | Patents |
|---|---|
| 2022 | 1 |
| 2023 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of heating up furnace bottom, and burner lance used in the method
US-12259184-B2 · Mar 25, 2025 · US
Blast furnace operation method
US-2023175085-A1 · Jun 8, 2023 · US
Method for converting a blast furnace plant
US-2023008316-A1 · Jan 12, 2023 · US
Method of heating up furnace bottom, and burner lance used in the method
US-2022178612-A1 · Jun 9, 2022 · US