Blowing control method for maintaining mushroom head of bottom-blowing nozzle converter
US-12571061-B2 · Mar 10, 2026 · US
by injecting powdered material
by injecting powdered material · 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 | C21C7/0037 |
| Official title | {by injecting powdered material} |
| Display label | by injecting powdered material |
| Total patents | 43 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 5 |
| 2018 | 3 |
| 2019 | 5 |
| 2020 | 4 |
| 2021 | 4 |
| 2022 | 3 |
| 2023 | 4 |
| 2024 | 2 |
| 2025 | 2 |
| 2026 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
A method for manufacturing pig iron in an electrical smelting furnace and associated electrical smelting furnace
US-2026043100-A1 · Feb 12, 2026 · US
Carburizer and carburization method using the same
US-2026043120-A1 · Feb 12, 2026 · US
Method for denitrifying molten steel
US-2026035759-A1 · Feb 5, 2026 · US
A method for manufacturing pig iron in an electrical smelting furnace and associated electrical smelting furnace
US-2026028687-A1 · Jan 29, 2026 · US
Method for manufacturing pig iron into an electrical smelting furnace and associated smelting furnace
US-2026022428-A1 · Jan 22, 2026 · US
A method for manufacturing pig iron in an electrical smelting furnace and associated electrical smelting furnace
US-2026022429-A1 · Jan 22, 2026 · US
A method for manufacturing pig iron in an electrical smelting furnace and associated smelting furnace
US-2026015682-A1 · Jan 15, 2026 · US
A method for manufacturing pig iron in an electrical smelting furnace and associated electrical smelting furnace
US-2025388985-A1 · Dec 25, 2025 · US
Method for slag modification during end period of casting in steel ladle having cover
US-2025188556-A1 · Jun 12, 2025 · US
Electric furnace and steelmaking method
US-2024191315-A1 · Jun 13, 2024 · US
Top-blowing lance for converter, method for adding auxiliary raw material, and method for refining of molten iron
US-2024076755-A1 · Mar 7, 2024 · US
Method for producing chromium-containing molten steel
US-2023304110-A1 · Sep 28, 2023 · US
Blowing control method for maintaining mushroom head of bottom-blowing nozzle converter
US-2023287529-A1 · Sep 14, 2023 · US
A method of casting a steel semi-product with high titanium content
US-2023257839-A1 · Aug 17, 2023 · US
Method for dephosphorization of hot metal, and refining agent
US-11542566-B2 · Jan 3, 2023 · US
METHOD OF DYNAMIC CONTROL FOR BOTTOM BLOWING O2-CO2-CaO CONVERTER STEELMAKING PROCESS
US-2022325368-A1 · Oct 13, 2022 · US
Process for injecting particulate material into a liquid metal bath
US-11466332-B2 · Oct 11, 2022 · US
Dephosphorizing flux and method for preparing same
US-11225695-B2 · Jan 18, 2022 · US
Carburizer and carburization method using the same
US-2021404047-A1 · Dec 30, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21C7/0037?
- CPC C21C7/0037 is the Cooperative Patent Classification code for “by injecting powdered material.”
- How many patents are filed under CPC C21C7/0037 (by injecting powdered material)?
- Our database includes 43 publications tagged with this CPC code.
- Is patent activity under CPC C21C7/0037 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).