Optimized melting of compacted dri
US-2026043103-A1 · Feb 12, 2026 · US
Injection of partially reduced ore into a molten bath
Injection of partially reduced ore into a molten bath · 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 | C21B13/143 |
| Official title | {Injection of partially reduced ore into a molten bath} |
| Display label | Injection of partially reduced ore into a molten bath |
| Total patents | 32 |
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 | 3 |
| 2016 | 8 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 1 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 3 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
A method for producing molten pig iron into an electrical smelting unit
US-2026022430-A1 · Jan 22, 2026 · US
A method of manufacturing molten pig iron into an electrical smelting unit
US-2026009095-A1 · Jan 8, 2026 · US
Method for melting direct reduced iron, solid iron and method for producing the same, material for civil engineering and construction and method for producing the same, and system for melting direct reduced iron
US-2025283185-A1 · Sep 11, 2025 · US
Method for producing molten steel
US-12281365-B2 · Apr 22, 2025 · US
Facility for producing reduced iron and method for producing reduced iron
US-2025027178-A1 · Jan 23, 2025 · US
Method for producing slag having a desired quality
US-2024376559-A1 · Nov 14, 2024 · US
Molten pig iron manufacturing method
US-2024368716-A1 · Nov 7, 2024 · US
Steel production from iron melt
US-2024052442-A1 · Feb 15, 2024 · US
Biomass Direct Reduced Iron
US-2023203606-A1 · Jun 29, 2023 · US
Method for producing liquid pig iron from a DRI product
US-2023175087-A1 · Jun 8, 2023 · US
Method for producing molten steel
US-2022389527-A1 · Dec 8, 2022 · US
Method of introducing a metalliferous feed in an ironmaking process
US-2022316017-A1 · Oct 6, 2022 · US
Direct reduced iron (DRI) heat treatment, products formed therefrom, and use thereof
US-11427877-B2 · Aug 30, 2022 · US
Method for manufacturing reduced iron
US-10557179-B2 · Feb 11, 2020 · US
Molten iron manufacturing apparatus and molten iron manufacturing method
US-10422582-B2 · Sep 24, 2019 · US
Direct reduced iron (dri) heat treatment, products formed therefrom, and use thereof
US-2019085420-A1 · Mar 21, 2019 · US
Method for producing liquid pig iron
US-2018363075-A1 · Dec 20, 2018 · US
Reformer gas-based reducing method with reduced NOx emission
US-10030911-B2 · Jul 24, 2018 · US
Method for Manufacturing Reduced Iron
US-2018010202-A1 · Jan 11, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21B13/143?
- CPC C21B13/143 is the Cooperative Patent Classification code for “Injection of partially reduced ore into a molten bath.”
- How many patents are filed under CPC C21B13/143 (Injection of partially reduced ore into a molten bath)?
- Our database includes 32 publications tagged with this CPC code.
- Is patent activity under CPC C21B13/143 growing?
- Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).