Method and smelting unit for pyrometallurgical smelting of metal-containing raw materials, waste materials and/or secondary waste materials
US-2023416869-A1 · Dec 28, 2023 · US
Treatment with gases (C21C7/06, C21C7/064, C21C7/068 take precedence)
Treatment with gases (C21C7/06, C21C7/064, C21C7/068 take 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 | C21C7/072 |
| Official title | Treatment with gases (C21C7/06, C21C7/064, C21C7/068 take precedence) |
| Display label | Treatment with gases (C21C7/06, C21C7/064, C21C7/068 take precedence) |
| Total patents | 93 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 4 |
| 2017 | 7 |
| 2018 | 5 |
| 2019 | 4 |
| 2020 | 11 |
| 2021 | 5 |
| 2022 | 10 |
| 2023 | 11 |
| 2024 | 23 |
| 2025 | 5 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Gas injection nozzle refractory and gas injection nozzle
US-11821691-B2 · Nov 21, 2023 · US
Molten steel refining method
US-2023340629-A1 · Oct 26, 2023 · US
Process for producing raw steel and aggregate for production thereof
US-2023323491-A1 · Oct 12, 2023 · US
Method for producing chromium-containing molten steel
US-2023304110-A1 · Sep 28, 2023 · US
Method for producing high nitrogen steel by duplex melting process of pressurized ladle refining and pressurized electroslag remelting
US-11732337-B2 · Aug 22, 2023 · US
Method for producing low-carbon ferromanganese
US-2023167518-A1 · Jun 1, 2023 · US
Decarburization end point determination method, decarburization end point determination device, secondary refining operation method for steel making, and method for producing molten steel
US-2023083264-A1 · Mar 16, 2023 · US
Steel for pressure vessels having excellent resistance to hydrogen induced cracking and manufacturing method thereof
US-11578376-B2 · Feb 14, 2023 · US
Method for dephosphorization of hot metal, and refining agent
US-11542566-B2 · Jan 3, 2023 · US
Method for removing phosphorus from phosphorus-containing substance, method for manufacturing raw material for metal smelting or raw material for metal refining, and method for manufacturing metal
US-2022372591-A1 · Nov 24, 2022 · US
Device for trapping hydrogen
US-2022340999-A1 · Oct 27, 2022 · US
Method to remove copper from steel, and corresponding additive
US-2022307098-A1 · Sep 29, 2022 · US
Directionally solidified high-boron and high-vanadium high-speed steel and method for preparing same
US-2022297180-A1 · Sep 22, 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
Method for produing high nitrogen steel by duplex melting process of pressurized ladle refining and pressurized electroslag remelting
US-2022228243-A1 · Jul 21, 2022 · US
Lance nozzle
US-2022154299-A1 · May 19, 2022 · US
Steel decarburization using carbon dioxide
US-2022136076-A1 · May 5, 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
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21C7/072?
- CPC C21C7/072 is the Cooperative Patent Classification code for “Treatment with gases (C21C7/06, C21C7/064, C21C7/068 take precedence).”
- How many patents are filed under CPC C21C7/072 (Treatment with gases (C21C7/06, C21C7/064, C21C7/068 take precedence))?
- Our database includes 93 publications tagged with this CPC code.
- Is patent activity under CPC C21C7/072 growing?
- Publication counts under this code: 23 in 2024 vs 5 in 2025 (latest complete years).