Blowing control method for maintaining mushroom head of bottom-blowing nozzle converter
US-12571061-B2 · Mar 10, 2026 · US
Blowing through the bath (C21C5/35 takes precedence)
Blowing through the bath (C21C5/35 takes precedence) · 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 | C21C5/34 |
| Official title | Blowing through the bath (C21C5/35 takes precedence) |
| Display label | Blowing through the bath (C21C5/35 takes precedence) |
| Total patents | 34 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 3 |
| 2017 | 5 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 8 |
| 2023 | 4 |
| 2024 | 1 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Biomass pyrolysis integrated with bio-reduction of metal ores, hydrogen production, and/or activated-carbon production
US-2025188565-A1 · Jun 12, 2025 · US
Molten iron refining method
US-2024060149-A1 · Feb 22, 2024 · US
Method for treating molten metals and/or slags in metallurgical baths and metallurgical plant for treating molten metals
US-2023416868-A1 · Dec 28, 2023 · 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
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
Biomass pyrolysis integrated with bio-reduction of metal ores, hydrogen production, and/or activated-carbon production
US-2022162725-A1 · May 26, 2022 · US
Biomass pyrolysis integrated with bio-reduction of metal ores, hydrogen production, and/or activated-carbon production
US-2022162064-A1 · May 26, 2022 · US
Biomass pyrolysis integrated with bio-reduction of metal ores, hydrogen production, and/or activated-carbon production
US-2022162726-A1 · May 26, 2022 · US
Biomass pyrolysis integrated with bio-reduction of metal ores, hydrogen production, and/or activated-carbon production
US-2022162076-A1 · May 26, 2022 · US
Biomass pyrolysis integrated with bio-reduction of metal ores, hydrogen production, and/or activated-carbon production
US-2022162077-A1 · May 26, 2022 · US
Gas injection nozzle refractory and gas injection nozzle
US-2022003500-A1 · Jan 6, 2022 · 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
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21C5/34?
- CPC C21C5/34 is the Cooperative Patent Classification code for “Blowing through the bath (C21C5/35 takes precedence).”
- How many patents are filed under CPC C21C5/34 (Blowing through the bath (C21C5/35 takes precedence))?
- Our database includes 34 publications tagged with this CPC code.
- Is patent activity under CPC C21C5/34 growing?
- Publication counts under this code: 1 in 2024 vs 1 in 2025 (latest complete years).