Method of producing hot metal using solid-reducing furnace and submerged arc furnace
US-2026071286-A1 · Mar 12, 2026 · US
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in rotary furnaces
in rotary furnaces · 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 | C22B1/216 |
| Official title | in rotary furnaces |
| Display label | in rotary furnaces |
| Total patents | 11 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 1 |
| 2020 | 2 |
| 2021 | 1 |
| 2023 | 1 |
| 2024 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Pre-reduced pellet preparation apparatus and method based on grate-rotary kiln
US-2024279767-A1 · Aug 22, 2024 · US
Reduced iron production method and reduced iron production device
US-2024175101-A1 · May 30, 2024 · US
Raw material particles for production of agglomerate, method for producing raw material particles for production of agglomerate, agglomerate, method for producing agglomerate, and method for producing reduced iron
US-2024167110-A1 · May 23, 2024 · US
Method for producing iron ore pellets
US-2024158886-A1 · May 16, 2024 · US
Method for removing phosphorus from phosphorus-containing substance
US-11649514-B2 · May 16, 2023 · US
Method for removing phosphorus from phosphorus-containing substance
US-2021071274-A1 · Mar 11, 2021 · US
Metal oxide smelting method
US-2020024685-A1 · Jan 23, 2020 · US
Metal oxide smelting method
US-2020010925-A1 · Jan 9, 2020 · US
Device for the improvement of crude pellets and pelletizing process
US-9580769-B2 · Feb 28, 2017 · US
Device for the improvement of crude pellets and pelletizing process
US-2015128766-A1 · May 14, 2015 · US