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
Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle
Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle · 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 | C21C7/0075 |
| Official title | {Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle} |
| Display label | Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle |
| Total patents | 104 |
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 | 3 |
| 2016 | 8 |
| 2017 | 6 |
| 2018 | 6 |
| 2019 | 11 |
| 2020 | 11 |
| 2021 | 4 |
| 2022 | 2 |
| 2023 | 10 |
| 2024 | 7 |
| 2025 | 30 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods of protecting furnace electrodes with cooling liquid that contains an additive
US-2023254953-A1 · Aug 10, 2023 · US
Plated steel sheet having excellent corrosion resistance, workability and surface quality and method for manufacturing same
US-2023235438-A1 · Jul 27, 2023 · US
Method of making steel by deeply dephosphorization in hot metal tank and decarburization using semi-steel with nearly zero phosphorus load in converter
US-11674192-B2 · Jun 13, 2023 · US
Methods of protecting furnace electrodes with cooling liquid that contains an additive
US-11653426-B2 · May 16, 2023 · US
Decarburization refining method for molten steel under reduced pressure
US-2023142051-A1 · May 11, 2023 · US
Method of making steel by deeply dephosphorization in hot metal tank and decarburization using semi-steel with nearly zero phosphorus load in converter
US-2023121123-A1 · Apr 20, 2023 · US
Operation method of ladle refining treatment
US-2023012857-A1 · Jan 19, 2023 · US
Method for dephosphorization of hot metal, and refining agent
US-11542566-B2 · Jan 3, 2023 · 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
Method for recycling chromium oxide and forming chromium-alloy steel
US-2022170124-A1 · Jun 2, 2022 · US
Methods of protecting furnace electrodes with cooling liquid that contains an additive
US-2021400779-A1 · Dec 23, 2021 · US
Methods of protecting furnace electrodes with cooling liquid that contains an additive
US-11140755-B2 · Oct 5, 2021 · US
Manufacture of low carbon steel
US-11047015-B2 · Jun 29, 2021 · US
Molten steel desulfurization method, molten steel secondary refining method, and molten steel manufacturing method
US-11035014-B2 · Jun 15, 2021 · US
Method for dephosphorization of molten iron, and refining agent
US-2020385830-A1 · Dec 10, 2020 · US
Method for producing alloy steel
US-2020377977-A1 · Dec 3, 2020 · US
Stainless steel product
US-10822679-B2 · Nov 3, 2020 · US
Molten manganese-containing steel production method, holding furnace, and molten manganese-containing steel production equipment using holding furnace
US-2020340085-A1 · Oct 29, 2020 · US
Steel for induction hardening
US-10808304-B2 · Oct 20, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21C7/0075?
- CPC C21C7/0075 is the Cooperative Patent Classification code for “Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle.”
- How many patents are filed under CPC C21C7/0075 (Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle)?
- Our database includes 104 publications tagged with this CPC code.
- Is patent activity under CPC C21C7/0075 growing?
- Publication counts under this code: 7 in 2024 vs 30 in 2025 (latest complete years).