Method for producing molten pig iron
US-2025179594-A1 · Jun 5, 2025 · US
of carbon dioxide
of carbon dioxide · 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 | C21B2100/282 |
| Official title | of carbon dioxide |
| Display label | of carbon dioxide |
| Total patents | 79 |
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 | 5 |
| 2016 | 11 |
| 2017 | 8 |
| 2018 | 5 |
| 2019 | 1 |
| 2021 | 3 |
| 2022 | 6 |
| 2023 | 6 |
| 2024 | 14 |
| 2025 | 16 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Direct reduced iron system and method
US-2024401160-A1 · Dec 5, 2024 · US
Method for refining molten iron
US-2024392398-A1 · Nov 28, 2024 · US
Method for refining molten iron
US-2024392400-A1 · Nov 28, 2024 · US
Method for producing an iron melt
US-2024344155-A1 · Oct 17, 2024 · US
Method for producing agglomerated ore, method for producing reduced iron, agglomerated ore, sintering machine and pellet firing furnace
US-2024279758-A1 · Aug 22, 2024 · US
Method for producing steel in an integrated metallurgical plant
US-2024271232-A1 · Aug 15, 2024 · US
Direct reduced iron system and method
US-12060622-B2 · Aug 13, 2024 · US
Operating method of a network of plants
US-2024263259-A1 · Aug 8, 2024 · US
A method for manufacturing direct reduced iron
US-2024263260-A1 · Aug 8, 2024 · US
A method for manufacturing direct reduced iron
US-2024254576-A1 · Aug 1, 2024 · US
A method for manufacturing direct reduced iron
US-2024254575-A1 · Aug 1, 2024 · US
Systems and methods for improved carbon capture associated with molten metal production
US-2024247327-A1 · Jul 25, 2024 · US
Direct reduced iron system and method using synthetic combustion air
US-2024218474-A1 · Jul 4, 2024 · US
Method for operating a blast furnace installation
US-2024018614-A1 · Jan 18, 2024 · US
Method for operating a metallurgic plant for producing iron products
US-2023272495-A1 · Aug 31, 2023 · US
A direct reduction system and relative process
US-2023243004-A1 · Aug 3, 2023 · US
System network and method for operating a system network of this type for producing higher alcohols
US-2023219815-A1 · Jul 13, 2023 · US
Steelmaking line and method of producing reduced iron
US-2023175084-A1 · Jun 8, 2023 · US
Solid carbon production device and solid carbon production method
US-2023150820-A1 · May 18, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21B2100/282?
- CPC C21B2100/282 is the Cooperative Patent Classification code for “of carbon dioxide.”
- How many patents are filed under CPC C21B2100/282 (of carbon dioxide)?
- Our database includes 79 publications tagged with this CPC code.
- Is patent activity under CPC C21B2100/282 growing?
- Publication counts under this code: 14 in 2024 vs 16 in 2025 (latest complete years).