Blowing control method for maintaining mushroom head of bottom-blowing nozzle converter
US-12571061-B2 · Mar 10, 2026 · US
Bottoms or tuyéres of converters
Bottoms or tuyéres of converters · 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 | C21C5/48 |
| Official title | Bottoms or tuyéres of converters |
| Display label | Bottoms or tuyéres of converters |
| Total patents | 38 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 3 |
| 2017 | 5 |
| 2018 | 6 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 4 |
| 2022 | 6 |
| 2023 | 3 |
| 2024 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for smelting low nitrogen steel using electric furnace
US-12018341-B2 · Jun 25, 2024 · US
Refining vessel for high-temperature melt
US-11976340-B2 · May 7, 2024 · US
Gas injection nozzle refractory and gas injection nozzle
US-11821691-B2 · Nov 21, 2023 · US
Blowing control method for maintaining mushroom head of bottom-blowing nozzle converter
US-2023287529-A1 · Sep 14, 2023 · US
Long-life service method for powder-bottom-injecting converter based on collaborative hot replacement of furnace bottom and bottom purging brick
US-11667982-B2 · Jun 6, 2023 · US
METHOD OF DYNAMIC CONTROL FOR BOTTOM BLOWING O2-CO2-CaO CONVERTER STEELMAKING PROCESS
US-2022325368-A1 · Oct 13, 2022 · US
Gas purging plug, gas purging system, method for characterization of a gas purging plug and method for purging a metal melt
US-11408040-B2 · Aug 9, 2022 · US
Long-life service method for powder-bottom-injecting converter based on collaborative hot replacement of furnace bottom and bottom purging brick
US-2022235427-A1 · Jul 28, 2022 · US
Refining vessel for high-temperature melt
US-2022170123-A1 · Jun 2, 2022 · US
Gas injection nozzle refractory and gas injection nozzle
US-2022003500-A1 · Jan 6, 2022 · US
Socket installation structure of refractory article
US-11213886-B2 · Jan 4, 2022 · US
Method for smelting low nitrogen steel using electric furnace
US-2021355555-A1 · Nov 18, 2021 · US
Tuyere for a basic oxygen furnace
US-11155890-B2 · Oct 26, 2021 · US
Gas purging plug, gas purging system, method for characterization of a gas purging plug and method for purging a metal melt
US-2021164065-A1 · Jun 3, 2021 · US
Tuyere for a basic oxygen furnace
US-2021017616-A1 · Jan 21, 2021 · US
Gas purging device
US-2020316678-A1 · Oct 8, 2020 · US
Bottom stirring tuyere and method for a basic oxygen furnace
US-10781499-B2 · Sep 22, 2020 · US
Socket installation structure of refractory article
US-2020246863-A1 · Aug 6, 2020 · US
Bottom stirring tuyere and method for a basic oxygen furnace
US-2019218631-A1 · Jul 18, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21C5/48?
- CPC C21C5/48 is the Cooperative Patent Classification code for “Bottoms or tuyéres of converters.”
- How many patents are filed under CPC C21C5/48 (Bottoms or tuyéres of converters)?
- Our database includes 38 publications tagged with this CPC code.
- Is patent activity under CPC C21C5/48 growing?
- Publication counts under this code: 3 in 2023 vs 2 in 2024 (latest complete years).