Method for obtaining calcium aluminates from non-saline aluminum slags
US-10858261-B2 · Dec 8, 2020 · US
Working-up slag
Working-up slag · 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 | C22B7/04 |
| Official title | Working-up slag |
| Display label | Working-up slag |
| Total patents | 168 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 10 |
| 2017 | 12 |
| 2018 | 8 |
| 2019 | 19 |
| 2020 | 16 |
| 2021 | 12 |
| 2022 | 22 |
| 2023 | 19 |
| 2024 | 22 |
| 2025 | 18 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for preparing iron ore concentrates by recycling copper slag tailings
US-2020332390-A1 · Oct 22, 2020 · US
Method For Detoxifying Chromium Slag By Using High Sulfur Coal
US-2020282252-A1 · Sep 10, 2020 · US
Methods of producing a titanium product
US-10689730-B2 · Jun 23, 2020 · US
A method for recovering valuable metals and simultaneously preparing ceramsite by roasting cyanide tailing
US-2019382312-A1 · Dec 19, 2019 · US
Process for the recovery of lithium
US-2019292629-A1 · Sep 26, 2019 · US
Treatment Method for Resource Recycling of Hexavalent Chromium-Containing Residues
US-2019284661-A1 · Sep 19, 2019 · US
Method for preparing titanium alloys based on aluminothermic self-propagating gradient reduction and slag-washing refining
US-2019241994-A1 · Aug 8, 2019 · US
System and method for concentrating rare earth elements from coal byproducts/slag
US-10358694-B2 · Jul 23, 2019 · US
Method and carrier for transporting reductant such as coke into a metallurgical furnace and production method of the carrier
US-10337084-B2 · Jul 2, 2019 · US
Preparation method of calcium carbonate with high purity from inorganic materials containing alkali metals or alkali earth metals
US-10322941-B2 · Jun 18, 2019 · US
Method for the Treatment of Iron-Containing Sludge
US-2019177815-A1 · Jun 13, 2019 · US
Reduced iron production method and production apparatus
US-2019169704-A1 · Jun 6, 2019 · US
Method for recovering calcium-containing solid component from steelmaking slag and recovered solid component
US-10287652-B2 · May 14, 2019 · US
System and method for concentrating rare earth elements from coal byproducts/slag
US-2019119785-A1 · Apr 25, 2019 · US
Method for eluting calcium from steel slag and method for recovering calcium from steel slag
US-2019078170-A1 · Mar 14, 2019 · US
Lithium-rich metallurgical slag
US-2019032171-A1 · Jan 31, 2019 · US
Method for comprehensive recovery of silver-containing lead slag
US-2019032170-A1 · Jan 31, 2019 · US
Producing a titanium product
US-10190191-B2 · Jan 29, 2019 · US
Separation method of rare earth element and iron and rare earth element-containing slag
US-2019017147-A1 · Jan 17, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B7/04?
- CPC C22B7/04 is the Cooperative Patent Classification code for “Working-up slag.”
- How many patents are filed under CPC C22B7/04 (Working-up slag)?
- Our database includes 168 publications tagged with this CPC code.
- Is patent activity under CPC C22B7/04 growing?
- Publication counts under this code: 22 in 2024 vs 18 in 2025 (latest complete years).