Process for selectively capturing chemical elements from a polymetallic sample
US-2026055006-A1 · Feb 26, 2026 · US
Carbonates
Carbonates · 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 | C01F17/247 |
| Official title | Carbonates |
| Display label | Carbonates |
| Total patents | 54 |
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 | 2 |
| 2019 | 5 |
| 2020 | 8 |
| 2021 | 5 |
| 2022 | 9 |
| 2023 | 8 |
| 2024 | 4 |
| 2025 | 7 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods and compositions to recover rare earth elements from organic solutions
US-2025369073-A1 · Dec 4, 2025 · US
Method for producing rare earth carbonate fine particles and a rare earth carbonate fine particle
US-12448299-B2 · Oct 21, 2025 · US
Coating formulation with improved color retention
US-2025289961-A1 · Sep 18, 2025 · US
Method for preparing cerium (iii) hydroxy carbonate
US-2025289726-A1 · Sep 18, 2025 · US
Cerium hydroxy carbonate composition
US-2025277120-A1 · Sep 4, 2025 · US
Co2 assisted regenerable solvent aided separation of heavy rare earth elements
US-2025197237-A1 · Jun 19, 2025 · US
Cerium (iii) carbonate formulations
US-2025083971-A1 · Mar 13, 2025 · US
Cerium (III) carbonate formulations
US-12180084-B2 · Dec 31, 2024 · US
Carbon dioxide gas sensor
US-2024402122-A1 · Dec 5, 2024 · US
Carbon dioxide gas sensor
US-12099030-B2 · Sep 24, 2024 · US
Slurry with rare earth oxide particles
US-11912583-B2 · Feb 27, 2024 · US
Rare earth compound particles and method for producing rare earth oxide particles
US-11840456-B2 · Dec 12, 2023 · US
Selective material recovery from natural brines
US-2023365422-A1 · Nov 16, 2023 · US
Recovery of rare earth elements from acidic solutions
US-2023340639-A1 · Oct 26, 2023 · US
Selective material recovery from solution
US-11708279-B2 · Jul 25, 2023 · US
Aqueous Dispersion of Cerium (III) Carbonate Particles
US-2023159782-A1 · May 25, 2023 · US
Preparation of Cerium (III) Carbonate Dispersion
US-2023144769-A1 · May 11, 2023 · US
Preparation of Cerium (III) Carbonate Dispersion
US-2023146467-A1 · May 11, 2023 · US
Method for producing metal oxide nanoparticles
US-11591235-B2 · Feb 28, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01F17/247?
- CPC C01F17/247 is the Cooperative Patent Classification code for “Carbonates.”
- How many patents are filed under CPC C01F17/247 (Carbonates)?
- Our database includes 54 publications tagged with this CPC code.
- Is patent activity under CPC C01F17/247 growing?
- Publication counts under this code: 4 in 2024 vs 7 in 2025 (latest complete years).