Method of recovering lithium from a lithium source
US-2026091355-A1 · Apr 2, 2026 · US
Counter-current operation
Counter-current operation · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B01D2315/24 |
| Official title | Counter-current operation |
| Display label | Counter-current operation |
| Total patents | 55 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 5 |
| 2019 | 3 |
| 2020 | 3 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 10 |
| 2024 | 9 |
| 2025 | 11 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cross-flow filtration of slurry catalyst in a petroleum-based liquid carrier
US-2026048389-A1 · Feb 19, 2026 · US
Lithium recovery using aqueous sources
US-12533605-B2 · Jan 27, 2026 · US
Membrane Concentration of Dissolved Species
US-2026001037-A1 · Jan 1, 2026 · US
Gas separation membrane bundle with convertible flow configurations
US-12508549-B2 · Dec 30, 2025 · US
Recovery of fluoride from fluoride-containing waste water through membrane separation
US-2025382203-A1 · Dec 18, 2025 · US
Method of recovering lithium from a lithium source
US-12491476-B2 · Dec 9, 2025 · US
Lithium recovery using aqueous sources
US-12458905-B2 · Nov 4, 2025 · US
Lithium recovery using aqueous sources
US-12447418-B2 · Oct 21, 2025 · US
Lithium recovery using aqueous sources
US-2025281850-A1 · Sep 11, 2025 · US
Lithium purification and conversion
US-12351471-B2 · Jul 8, 2025 · US
Method of recovering lithium from a lithium source
US-2025177923-A1 · Jun 5, 2025 · US
Lithium recovery using aqueous sources
US-12280322-B2 · Apr 22, 2025 · US
Humidifier and manufacturing process of humidifier
US-2025083108-A1 · Mar 13, 2025 · US
Lithium purification and conversion
US-12215035-B2 · Feb 4, 2025 · US
Adsorption desalination direct contact membrane distillation system
US-2024343616-A1 · Oct 17, 2024 · US
Lithium purification and conversion
US-2024308865-A1 · Sep 19, 2024 · US
Cross current staged reverse osmosis
US-12065370-B2 · Aug 20, 2024 · US
Cross current staged reverse osmosis
US-11999643-B2 · Jun 4, 2024 · US
Lithium recovery using aqueous sources
US-2024165539-A1 · May 23, 2024 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2315/24?
- CPC B01D2315/24 is the Cooperative Patent Classification code for “Counter-current operation.”
- How many patents are filed under CPC B01D2315/24 (Counter-current operation)?
- Our database includes 55 publications tagged with this CPC code.
- Is patent activity under CPC B01D2315/24 growing?
- Publication counts under this code: 9 in 2024 vs 11 in 2025 (latest complete years).