B01D 61/0271
Comprising multiple nanofiltration steps
Official title: {comprising multiple nanofiltration steps}
B01D61/0271 (Comprising multiple nanofiltration steps) appears on 61 US grants and 113 published applications in this corpus.
Search patents in B01D- Granted patents
- 61
- Published applications
- 113
- Assignees
- 71
- Inventors
- 279
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 3 |
| 2004 | 1 | 2 |
| 2005 | 1 | 3 |
| 2006 | 4 | 3 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 3 |
| 2012 | 2 | 1 |
| 2013 | 2 | 3 |
| 2014 | 1 | 5 |
| 2015 | 1 | 1 |
| 2016 | 0 | 4 |
| 2017 | 2 | 2 |
| 2018 | 0 | 5 |
| 2019 | 3 | 3 |
| 2020 | 1 | 5 |
| 2021 | 4 | 11 |
| 2022 | 7 | 10 |
| 2023 | 7 | 12 |
| 2024 | 4 | 12 |
| 2025 | 3 | 15 |
| 2026 | 5 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Preparation method of milk oligosaccharides and oligosaccharide powder and food prepared thereby15 Sep 2026US 12,735,512 B2Beijing Sanyuan Foods Co., Ltd.
- Processes for recovering lithium values from lithium-containing brines10 Mar 2026US 12,570,537 B2Albemarle Corporation
- Membrane system to treat leachate and methods of treating leachate17 Feb 2026US 12,551,846 B2Alachua County
- Electrodialysis device27 Jan 2026US 12,533,635 B2Mitsubishi Heavy Industries, Ltd.
- Method of concentrating lithium-containing solutions and recovering lithium therefrom20 Jan 2026US 12,528,053 B2UT-Battelle, LLC
- 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.
- Processes for recovering lithium values from lithium-containing brines2 Jul 2026US 2026/0184583 A1Albemarle Corporation
- System and methods for concentrating dissolved solids in an aqueous solution30 Apr 2026US 2026/0115664 A1Saudi Water Authority
- Lithium recovery from liquid streams using solute-permeable membranes23 Apr 2026US 2026/0108850 A1Gradiant Corporation
- Methods and systems for producing improved fermented beverage concentrate26 Feb 2026US 2026/0055351 A1Sustainable Beverage Technologies Inc.
Most cited
By later US patents
- High water recovery membrane purification process140US 6,113,797 A2000
- High water recovery single stage membrane process58US 6,461,514 B12002
- Salt water desalination process using ion selective membranes39US 6,783,682 B1L.E.T., Leading Edge Technologies Limited · 2004
- Process for treating and regenerating spent caustic31US 5,268,104 AStone & Webster Engineering Corp. · 1993
- Plating waste water treatment and metals recovery system29US 6,162,361 A2000