Method for manufacturing molten iron with electric arc furnace
US-12492439-B2 · Dec 9, 2025 · US
Processes yielding slags of special composition
Processes yielding slags of special composition · 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 | C21C5/36 |
| Official title | Processes yielding slags of special composition |
| Display label | Processes yielding slags of special composition |
| Total patents | 31 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 5 |
| 2024 | 9 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for monitoring a steelmaking process and associated computer program
US-12473604-B2 · Nov 18, 2025 · US
Method for producing low-carbon ferromanganese
US-12473605-B2 · Nov 18, 2025 · US
Process for manufacturing a slag conditioning agent for steel desulfurization
US-12378619-B2 · Aug 5, 2025 · US
Method for producing slag having a desired quality
US-2024376559-A1 · Nov 14, 2024 · US
Process for manufacturing a slag conditioning agent for steel desulfurization
US-2024247330-A1 · Jul 25, 2024 · US
Method for operating converter and method for producing molten steel
US-2024167112-A1 · May 23, 2024 · US
Process for manufacturing a slag conditioning agent for steel desulfurization
US-11932914-B2 · Mar 19, 2024 · US
Pyrometallurgical process for recovering nickel, manganese, and cobalt
US-11926884-B2 · Mar 12, 2024 · US
Molten iron refining method
US-2024076754-A1 · Mar 7, 2024 · US
Converter steelmaking method
US-2024068061-A1 · Feb 29, 2024 · US
Refining method of molten iron and manufacturing method of molten steel using same
US-2024068060-A1 · Feb 29, 2024 · US
Molten iron refining method
US-2024060149-A1 · Feb 22, 2024 · US
Method for producing chromium-containing molten steel
US-2023304110-A1 · Sep 28, 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
Method for producing low-carbon ferromanganese
US-2023167518-A1 · Jun 1, 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
Pyrometallurgical process for recovering nickel, manganese, and cobalt
US-2023002856-A1 · Jan 5, 2023 · US
Method for manufacturing molten iron with electric arc furnace
US-2022403478-A1 · Dec 22, 2022 · US
Nb microalloyed high strength high hole expansion steel and production method therefor
US-2022389534-A1 · Dec 8, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21C5/36?
- CPC C21C5/36 is the Cooperative Patent Classification code for “Processes yielding slags of special composition.”
- How many patents are filed under CPC C21C5/36 (Processes yielding slags of special composition)?
- Our database includes 31 publications tagged with this CPC code.
- Is patent activity under CPC C21C5/36 growing?
- Publication counts under this code: 9 in 2024 vs 4 in 2025 (latest complete years).