B01D 2315/24
Counter-current operation
B01D2315/24 (Counter-current operation) appears on 24 US grants and 43 published applications in this corpus.
Search patents in B01D- Granted patents
- 24
- Published applications
- 43
- Assignees
- 25
- Inventors
- 100
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2016 | 0 | 2 |
| 2017 | 0 | 3 |
| 2018 | 1 | 4 |
| 2019 | 3 | 0 |
| 2020 | 2 | 1 |
| 2021 | 1 | 2 |
| 2022 | 0 | 5 |
| 2023 | 2 | 9 |
| 2024 | 4 | 6 |
| 2025 | 9 | 4 |
| 2026 | 2 | 7 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Separation of alcohol using a membrane15 Sep 2026US 12,734,482 B2Altr Fltr Inc.
- Lithium recovery using aqueous sources27 Jan 2026US 12,533,605 B2Schlumberger Technology Corporation
- Gas separation membrane bundle with convertible flow configurations30 Dec 2025US 12,508,549 B2Air Liquide Advanced Technologies U.S. LLC
- Apparatus and method for purification of gas mixtures23 Dec 2025US 12,502,640 B1Avanpore LLC
- Method of recovering lithium from a lithium source9 Dec 2025US 12,491,476 B2Schlumberger Technology Corporation
- Membrane Dialysis Device23 Jul 2026US 2026/0208111 A1AT&S Austria Technologie & Systemtechnik Aktiengesellschaft
- Cartridge for fuel cell humidifier, and fuel cell humidifier23 Jul 2026US 2026/0213231 A1Kolon Industries, Inc.
- Lithium purification and conversion14 May 2026US 2026/0132040 A1Schlumberger Technology Corporation
- Lithium recovery using aqueous sources7 May 2026US 2026/0124556 A1Schlumberger Technology Corporation
- Method of recovering lithium from a lithium source2 Apr 2026US 2026/0091355 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Production of multivalent ion-rich process streams using multi-stage osmotic separation13US 10,245,555 B2Gradiant Corporation · 2019
- Cross current staged reverse osmosis8US 10,214,438 B2Battelle Memorial Institute · 2019
- Cross current staged reverse osmosis7US 10,214,437 B2Battelle Memorial Institute · 2019
- Lithium recovery using aqueous sources2US 12,280,322 B2Schlumberger Technology Corporation · 2025
- Fuel cell humidifier with bypass tube1US 11,611,090 B2Hyundai Motor Company · 2023