Method of purifying sodium bromide from waste circuit boards pyrolysis coke
US-12534376-B2 · Jan 27, 2026 · US
Sulfating roasting
Sulfating roasting · 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 | C22B1/06 |
| Official title | Sulfating roasting |
| Display label | Sulfating roasting |
| Total patents | 28 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 1 |
| 2018 | 2 |
| 2020 | 2 |
| 2021 | 5 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 6 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for metallurgy and separating rare earth concentrate using combination method
US-12398443-B2 · Aug 26, 2025 · US
Selective sulfidation and desulfidation
US-12258672-B2 · Mar 25, 2025 · US
Recovery method of lithium ion
US-2025059624-A1 · Feb 20, 2025 · US
Methods for extracting rare earth elements from ion-adsorption clays
US-2024417827-A1 · Dec 19, 2024 · US
Method for selectively extracting lithium from retired battery and application of method
US-12136714-B2 · Nov 5, 2024 · US
Method for selectively recovering valuable metal in waste lithium battery
US-2024347803-A1 · Oct 17, 2024 · US
Recovery method for valuable metals in copper anode slime
US-2024287644-A1 · Aug 29, 2024 · US
Method for producing battery-grade nickel sulfate by using laterite nickel ore
US-11952288-B2 · Apr 9, 2024 · US
Method for selectively extracting lithium from retired battery and application of method
US-2024039068-A1 · Feb 1, 2024 · US
Method for producing battery-grade nickel sulfate by using laterite nickel ore
US-2023227326-A1 · Jul 20, 2023 · US
Method for disposal of waste printed circuit board thermal cracking slag and smelting soot
US-11692238-B2 · Jul 4, 2023 · US
Method For Cooperative Disposal Of Waste Printed Circuit Board Thermal Cracking Slag And Smelting Ash
US-2023037130-A1 · Feb 2, 2023 · US
Method of purifying sodium bromide from waste circuit boards pyrolysis coke
US-2022356067-A1 · Nov 10, 2022 · US
Method for enriching precious metals from printed circuit board incineration ash from molten pool by circulating chlorination
US-11447845-B2 · Sep 20, 2022 · US
A Method for Enriching Precious Metals from Printed Circuit Board Incineration Ash from Molten Pool by Circulating Chlorination
US-2021324496-A1 · Oct 21, 2021 · US
Method of purifying sodium bromide from waste circuit boards pyrolysis coke
US-2021309533-A1 · Oct 7, 2021 · US
Process for metallurgy and separating rare earth concentrate using combination method
US-2021310100-A1 · Oct 7, 2021 · US
Selective sulfidation and desulfidation
US-2021277531-A1 · Sep 9, 2021 · US
Process and apparatus for producing uranium or a rare earth element
US-10894999-B2 · Jan 19, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B1/06?
- CPC C22B1/06 is the Cooperative Patent Classification code for “Sulfating roasting.”
- How many patents are filed under CPC C22B1/06 (Sulfating roasting)?
- Our database includes 28 publications tagged with this CPC code.
- Is patent activity under CPC C22B1/06 growing?
- Publication counts under this code: 6 in 2024 vs 3 in 2025 (latest complete years).