Method of removing calcium in a rechargeable lithium battery recycling process
US-2025346974-A1 · Nov 13, 2025 · US
Obtaining alkaline earth metals or magnesium
Obtaining alkaline earth metals or magnesium · 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 | C22B26/20 |
| Official title | Obtaining alkaline earth metals or magnesium |
| Display label | Obtaining alkaline earth metals or magnesium |
| Total patents | 63 |
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 | 8 |
| 2016 | 3 |
| 2017 | 5 |
| 2018 | 3 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 8 |
| 2024 | 13 |
| 2025 | 8 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Extraction of calcium and other valuable elements via sonic stimulation and sequential electrolysis
US-2025320620-A1 · Oct 16, 2025 · US
Systems and methods for separating yttrium and strontium
US-12371338-B2 · Jul 29, 2025 · US
Metal recovery agent, metal recovery member, metal recovery liquid agent and metal recovery method
US-2025188636-A1 · Jun 12, 2025 · US
Apparatus and methods for lithium, calcium, and magnesium extraction
US-2025154624-A1 · May 15, 2025 · US
Selective sulfidation and desulfidation
US-12258672-B2 · Mar 25, 2025 · US
Collocating a large-scale dissociating reactor near a geothermal energy source for green refinement of critical minerals from brines
US-12221670-B2 · Feb 11, 2025 · US
Processing hard rock lithium minerals or other materials to produce lithium materials and byproducts converted from a sodium sulfate intermediate product
US-2024425381-A1 · Dec 26, 2024 · US
Method of recovering transition metal from lithium secondary battery
US-2024413419-A1 · Dec 12, 2024 · US
Method of extracting and carbonating calcium from alkaline industrial waste or by-product materials
US-12157675-B2 · Dec 3, 2024 · US
Methods for extracting lithium from brines
US-2024336491-A1 · Oct 10, 2024 · US
Selective precipitation of solutes from aqueous solutions and related systems
US-2024270612-A1 · Aug 15, 2024 · US
Collocating a large-scale dissociating reactor near a geothermal energy source for green refinement of critical minerals from brines
US-2024271250-A1 · Aug 15, 2024 · US
Collocating a large-scale dissociating reactor near a geothermal energy source for green refinement of critical minerals from brines
US-2024247338-A1 · Jul 25, 2024 · US
Production method of 226Ra target, production method of 225Ac, and electrodeposition solution for producing 226Ra target
US-12046385-B2 · Jul 23, 2024 · US
Combined corrosion mitigation and hydrogen isotope extraction from molten salts
US-2024233972-A9 · Jul 11, 2024 · US
Collocating a large-scale dissociating reactor near a geothermal energy source for producing green lithium from brines
US-12012644-B2 · Jun 18, 2024 · US
Combined corrosion mitigation and hydrogen isotope extraction from molten salts
US-2024136081-A1 · Apr 25, 2024 · US
Systems and methods for separating radium from lead, bismuth, and thorium
US-11925879-B2 · Mar 12, 2024 · US
Methods and systems for extracting and/or separating one or more internal components from biomass particles prior to downstream processes, and related methods and systems
US-2024033792-A1 · Feb 1, 2024 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B26/20?
- CPC C22B26/20 is the Cooperative Patent Classification code for “Obtaining alkaline earth metals or magnesium.”
- How many patents are filed under CPC C22B26/20 (Obtaining alkaline earth metals or magnesium)?
- Our database includes 63 publications tagged with this CPC code.
- Is patent activity under CPC C22B26/20 growing?
- Publication counts under this code: 13 in 2024 vs 8 in 2025 (latest complete years).