Adjusting carbon content in direct reduced iron
US-2026043101-A1 · Feb 12, 2026 · US
In fluidised bed furnaces or apparatus containing a dispersion of the material · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C21B13/0033 |
| Official title | {In fluidised bed furnaces or apparatus containing a dispersion of the material} |
| Display label | In fluidised bed furnaces or apparatus containing a dispersion of the material |
| Total patents | 52 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 8 |
| 2017 | 2 |
| 2018 | 4 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 1 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 14 |
| 2025 | 7 |
| 2026 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-2026043101-A1 · Feb 12, 2026 · US
US-2025283186-A1 · Sep 11, 2025 · US
US-2025257416-A1 · Aug 14, 2025 · US
US-2025244079-A1 · Jul 31, 2025 · US
US-2025163525-A1 · May 22, 2025 · US
US-12286679-B2 · Apr 29, 2025 · US
US-2025027178-A1 · Jan 23, 2025 · US
US-2025011888-A1 · Jan 9, 2025 · US
US-2024410027-A1 · Dec 12, 2024 · US
US-12163198-B2 · Dec 10, 2024 · US
US-2024401160-A1 · Dec 5, 2024 · US
US-2024384364-A1 · Nov 21, 2024 · US
US-2024376559-A1 · Nov 14, 2024 · US
US-12139774-B2 · Nov 12, 2024 · US
US-2024360525-A1 · Oct 31, 2024 · US
US-2024344155-A1 · Oct 17, 2024 · US
US-2024327946-A1 · Oct 3, 2024 · US
US-12084731-B2 · Sep 10, 2024 · US
US-2024279767-A1 · Aug 22, 2024 · US
US-12060622-B2 · Aug 13, 2024 · US
Answers are generated from the same data shown on this page.