B01D 2311/25
Recirculation, recycling or bypass
Official title: Recirculation, recycling or bypass, e.g. recirculation of concentrate into the feed
B01D2311/25 (Recirculation, recycling or bypass) appears on 374 US grants and 651 published applications in this corpus.
Search patents in B01D- Granted patents
- 374
- Published applications
- 651
- Assignees
- 381
- Inventors
- 1,364
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 1 | 6 |
| 2012 | 1 | 11 |
| 2013 | 3 | 13 |
| 2014 | 6 | 22 |
| 2015 | 5 | 27 |
| 2016 | 13 | 31 |
| 2017 | 19 | 36 |
| 2018 | 25 | 68 |
| 2019 | 33 | 34 |
| 2020 | 25 | 74 |
| 2021 | 44 | 57 |
| 2022 | 44 | 60 |
| 2023 | 43 | 56 |
| 2024 | 38 | 64 |
| 2025 | 36 | 59 |
| 2026 | 35 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Vessel, system, and associated method for product concentration29 Sep 2026US 12,746,513 B2Repligen Corporation
- Apparatus and method for liquid treatment by forward osmosis1 Sep 2026US 12,722,119 B2Waterwhelm Ltd
- Systems and methods for purifying solvents1 Sep 2026US 12,722,140 B2Fujifilm Electronic Materials U.S.A., Inc.
- System and method for separating a gas mixture25 Aug 2026US 12,714,968 B2Haffmans B.V.
- Method for purifying liquid and system for the implementation thereof11 Aug 2026US 12,702,952 B2Electrophor, Inc.
- System and method for improved flow distribution in a hyperfiltration array24 Sep 2026US 2026/0284596 A1
- Method of regenerating organic solvent, organic solvent regenerator, and substrate processing system27 Aug 2026US 2026/0249246 A1SCREEN Holdings Co., Ltd.
- Method for Increasing Reverse Osmosis Recovery for High Silica Waters27 Aug 2026US 2026/0250161 A1Veolia Water Solutions & Technologies Support
- Organic solvent regenerator, substrate processing system, and method of regenerating organic solvent27 Aug 2026US 2026/0250222 A1SCREEN Holdings Co., Ltd.
- Systems and methods of high-pressure nanofiltration to reduce magnesium concentration while increasing lithium concentration in highly saline brines before direct lithium extraction6 Aug 2026US 2026/0225922 A1Fluid Technology Solutions (Fts), Inc.
Most cited
By later US patents
- Gas separator71US 4,119,417 ATokyo Shibaura Electric Co., Ltd. · 1978
- Fluid purification system45US 8,501,009 B2Home Dialysis Plus, Ltd. · 2013
- Filtering process35US 4,105,547 AAlfa-Laval AB · 1978
- 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