Apparatus and methods for rare earth element recovery and purification
US-2026071299-A1 · Mar 12, 2026 · US
using adducts or inclusion complexes
using adducts or inclusion complexes · 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 | C22B3/205 |
| Official title | {using adducts or inclusion complexes} |
| Display label | using adducts or inclusion complexes |
| Total patents | 38 |
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 | 1 |
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 4 |
| 2020 | 1 |
| 2021 | 1 |
| 2023 | 4 |
| 2024 | 8 |
| 2025 | 8 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Selective lithium extraction chemistry for geothermal brine
US-12570556-B2 · Mar 10, 2026 · US
Separation of rare earth elements
US-2025305092-A1 · Oct 2, 2025 · US
Method for recovering platinum group element
US-2025215525-A1 · Jul 3, 2025 · US
Synthesis of phosphonated polymer resins for the extraction of rare-earth elements
US-2025188222-A1 · Jun 12, 2025 · US
Leaching Method
US-2025092488-A1 · Mar 20, 2025 · US
Separation of rare earth elements
US-12247268-B2 · Mar 11, 2025 · US
Separation of rare earth elements
US-2025051878-A1 · Feb 13, 2025 · US
Processing and recycling method and product of ultrathin lithium foil
US-12215431-B2 · Feb 4, 2025 · US
Oxidative and reductive leaching methods
US-2025034676-A1 · Jan 30, 2025 · US
Processing and recycling method and product of ultrathin lithium foil
US-2024425989-A1 · Dec 26, 2024 · US
Carbon dioxide based mining for carbon negative mineral recovery
US-2024410032-A1 · Dec 12, 2024 · US
Separation of rare earth elements
US-12157930-B2 · Dec 3, 2024 · US
Supramolecular gold stripping from activated carbon using alpha-cyclodextrin
US-2024375084-A1 · Nov 14, 2024 · US
Metal recovery apparatus and metal recovery method
US-2024344168-A1 · Oct 17, 2024 · US
Selective separation of hexachloroplatinate(iv) dianions based on exo-binding with cucurbit[6]uril
US-2024262853-A1 · Aug 8, 2024 · US
Method for selective recovery of valuable metal from waste denitrification catalyst through alkali fusion
US-12037659-B2 · Jul 16, 2024 · US
Separation of rare earth elements
US-2024068071-A1 · Feb 29, 2024 · US
Systems and methods for hydrometallurgical, anti-solvent, and electrochemical recovery of metals from wastes and ashes
US-2023220514-A1 · Jul 13, 2023 · US
Selective lithium extraction chemistry for geothermal brine
US-2023166992-A1 · Jun 1, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B3/205?
- CPC C22B3/205 is the Cooperative Patent Classification code for “using adducts or inclusion complexes.”
- How many patents are filed under CPC C22B3/205 (using adducts or inclusion complexes)?
- Our database includes 38 publications tagged with this CPC code.
- Is patent activity under CPC C22B3/205 growing?
- Publication counts under this code: 8 in 2024 vs 8 in 2025 (latest complete years).