Hot Metal Production from DRI with Electric Arc Heating
US-2026071288-A1 · Mar 12, 2026 · US
Reduction of iron ores by passing through a heated column of carbon · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C21B13/002 |
| Official title | {Reduction of iron ores by passing through a heated column of carbon} |
| Display label | Reduction of iron ores by passing through a heated column of carbon |
| Total patents | 24 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 6 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 1 |
| 2022 | 1 |
| 2023 | 4 |
| 2024 | 2 |
| 2025 | 5 |
| 2026 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-2026071288-A1 · Mar 12, 2026 · US
US-12509745-B2 · Dec 30, 2025 · US
US-12497668-B2 · Dec 16, 2025 · US
US-12404566-B2 · Sep 2, 2025 · US
US-2025163525-A1 · May 22, 2025 · US
US-2025027178-A1 · Jan 23, 2025 · US
US-2024175101-A1 · May 30, 2024 · US
US-11959153-B2 · Apr 16, 2024 · US
US-2023287528-A1 · Sep 14, 2023 · US
US-2023085232-A1 · Mar 16, 2023 · US
US-2023002853-A1 · Jan 5, 2023 · US
US-2023002852-A1 · Jan 5, 2023 · US
US-11479829-B2 · Oct 25, 2022 · US
US-2019241990-A1 · Aug 8, 2019 · US
US-2018363075-A1 · Dec 20, 2018 · US
US-9534264-B2 · Jan 3, 2017 · US
US-9470456-B2 · Oct 18, 2016 · US
US-9428818-B2 · Aug 30, 2016 · US
US-9400139-B2 · Jul 26, 2016 · US
US-9400138-B2 · Jul 26, 2016 · US