B01D 2311/252
Recirculation of concentrate
B01D2311/252 (Recirculation of concentrate) appears on 204 US grants and 329 published applications in this corpus.
Search patents in B01D- Granted patents
- 204
- Published applications
- 329
- Assignees
- 217
- Inventors
- 688
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 5 |
| 2012 | 1 | 4 |
| 2013 | 2 | 5 |
| 2014 | 3 | 9 |
| 2015 | 3 | 15 |
| 2016 | 7 | 17 |
| 2017 | 10 | 16 |
| 2018 | 11 | 41 |
| 2019 | 19 | 23 |
| 2020 | 15 | 44 |
| 2021 | 26 | 28 |
| 2022 | 23 | 36 |
| 2023 | 24 | 20 |
| 2024 | 23 | 28 |
| 2025 | 21 | 20 |
| 2026 | 15 | 16 |
By publication year. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Apparatus and method for liquid treatment by forward osmosis1 Sep 2026US 12,722,119 B2Waterwhelm Ltd
- Method for purifying liquid and system for the implementation thereof11 Aug 2026US 12,702,952 B2Electrophor, Inc.
- Systems and methods for compact, decentralized desalination of feedwater for point-of-use applications16 Jun 2026US 12,654,134 B2Massachusetts Institute of Technology
- High recovery electrodialysis method16 Jun 2026US 12,655,046 B2Evoqua Water Technologies LLC
- Systems and methods for treatment of elevated organic content streams26 May 2026US 12,636,620 B2Spinovo LLC
- Method of regenerating organic solvent, organic solvent regenerator, and substrate processing system27 Aug 2026US 2026/0249246 A1SCREEN Holdings Co., Ltd.
- Organic solvent regenerator, substrate processing system, and method of regenerating organic solvent27 Aug 2026US 2026/0250222 A1SCREEN Holdings Co., Ltd.
- Energy Efficient Reverse Osmosis Filtration16 Jul 2026US 2026/0199837 A1Dd Filter Solutions, Inc.
- Circle-sequence reverse osmosis deionization apparatus18 Jun 2026US 2026/0167528 A1SK ecoplant Co., Ltd.
- Systems and methods for processing black liquor solutions18 Jun 2026US 2026/0168171 A1
Most cited
By later US patents
- Fluid purification system45US 8,501,009 B2Home Dialysis Plus, Ltd. · 2013
- Apparatus and methods for solution processing using reverse osmosis31US 8,216,473 B2Solution Dynamics, LLC · 2012
- Fluid purification system28US 8,524,086 B2Home Dialysis Plus, Ltd. · 2013
- Method for purifying liquids26US 9,206,060 B12015
- Apparatus and methods for solution processing using reverse osmosis24US 8,840,792 B2Solution Dynamics, LLC · 2014