Process for extracting tantalum and niobium from an aqueous acidic solution
US-2026009106-A1 · Jan 8, 2026 · US
Obtaining niobium or tantalum
Obtaining niobium or tantalum · 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 | C22B34/24 |
| Official title | Obtaining niobium or tantalum |
| Display label | Obtaining niobium or tantalum |
| Total patents | 40 |
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 | 2 |
| 2016 | 3 |
| 2017 | 5 |
| 2018 | 5 |
| 2019 | 5 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 4 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 6 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Metal compound, metal recovery electrode, and method for recovering metals from spent electrodes
US-2025333870-A1 · Oct 30, 2025 · US
Methods for recovering a target metal from iron or steel slag using at least one of a carbothermic reduction process and a pyro-hydrometallurgical process
US-2025305086-A1 · Oct 2, 2025 · US
Method and equipment for comprehensive utilization of niobite
US-12359281-B2 · Jul 15, 2025 · US
Methods for recovering a target metal from iron or steel slag using at least one of a carbothermic reduction process and a pyro-hydrometallurgical process
US-12305260-B2 · May 20, 2025 · US
Alkali microwave extraction
US-2025137094-A1 · May 1, 2025 · US
Method for extracting a refractory metal from an ore, a concentrate or a waste product
US-12270089-B2 · Apr 8, 2025 · US
Efficient recycling of e-waste by energy landscape inversion
US-2024425948-A1 · Dec 26, 2024 · US
Recycling system, recycling method, method for manufacturing electrode, and method for manufacturing battery
US-2024097224-A1 · Mar 21, 2024 · US
Method and Equipment for Comprehensive Utilization of Niobite
US-2023407437-A1 · Dec 21, 2023 · US
Method for cutting refractory metals
US-11602816-B2 · Mar 14, 2023 · US
Methods for recovering a target metal from iron or steel slag using at least one of a carbothermic reduction process and a pyro-hydrometallurgical process
US-2022364200-A1 · Nov 17, 2022 · US
Method for extracting a refractory metal from an ore, a concentrate or a waste product
US-2022364205-A1 · Nov 17, 2022 · US
Method for recovering a minor metal and/or rare-earth metal
US-11299796-B2 · Apr 12, 2022 · US
Method for preparing high-melting-point metal powder through multi-stage deep reduction
US-11241740-B2 · Feb 8, 2022 · US
Tantalum based alloy that is resistant to aqueous corrosion
US-11001912-B2 · May 11, 2021 · US
Methods for synthesizing high purity niobium or rhenium powders
US-10934605-B2 · Mar 2, 2021 · US
Process for extracting and recovering tantalum present in an acid aqueous phase by means of an ionic liquid, and use of such an ionic liquid for extracting the tantalum from an acid aqueous phase
US-10844459-B2 · Nov 24, 2020 · US
Method for preparing high-melting-point metal powder through multi-stage deep reduction
US-2020276648-A1 · Sep 3, 2020 · US
A method for cutting refractory metals
US-2020055157-A1 · Feb 20, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B34/24?
- CPC C22B34/24 is the Cooperative Patent Classification code for “Obtaining niobium or tantalum.”
- How many patents are filed under CPC C22B34/24 (Obtaining niobium or tantalum)?
- Our database includes 40 publications tagged with this CPC code.
- Is patent activity under CPC C22B34/24 growing?
- Publication counts under this code: 2 in 2024 vs 6 in 2025 (latest complete years).