B01D 61/246
Membrane extraction
Official title: {Membrane extraction}
B01D61/246 (Membrane extraction) appears on 147 US grants and 140 published applications in this corpus.
Search patents in B01D- Granted patents
- 147
- Published applications
- 140
- Assignees
- 128
- Inventors
- 426
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 7 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 1 |
| 2002 | 2 | 3 |
| 2003 | 3 | 2 |
| 2004 | 5 | 4 |
| 2005 | 1 | 5 |
| 2006 | 2 | 7 |
| 2007 | 6 | 6 |
| 2008 | 4 | 7 |
| 2009 | 2 | 3 |
| 2010 | 4 | 8 |
| 2011 | 4 | 2 |
| 2012 | 4 | 8 |
| 2013 | 3 | 5 |
| 2014 | 0 | 0 |
| 2015 | 4 | 8 |
| 2016 | 2 | 6 |
| 2017 | 2 | 7 |
| 2018 | 8 | 6 |
| 2019 | 4 | 7 |
| 2020 | 5 | 6 |
| 2021 | 6 | 4 |
| 2022 | 5 | 4 |
| 2023 | 0 | 5 |
| 2024 | 4 | 10 |
| 2025 | 6 | 11 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods to assess and reduce salt levels in a MRU21 Jul 2026US 12,687,537 B2Saudi Arabian Oil Company
- Membrane-based separation processes enhanced with an absorption device23 Jun 2026US 12,662,437 B2ExxonMobil Chemical Patents Inc.
- Atmospheric water generation systems and methods utilizing membrane-based water extraction14 Apr 2026US 12,599,849 B2Genesis Systems LLC
- Continuous process and system for the production of sodium bicarbonate crystals2 Dec 2025US 12,486,175 B2Université Catholique De Louvain
- Synthesis of graphene-modified polyurethane foam membrane for separating water from an oil-water mixture4 Nov 2025US 12,458,929 B2King Fahd University of Petroleum and Minerals
- Ultra-low power membrane-assisted lithium extraction system with passive foulant removal24 Sep 2026US 2026/0284598 A1Lyten, Inc.
- Organic solvent regenerator, substrate processing system, and method of regenerating organic solvent27 Aug 2026US 2026/0250222 A1SCREEN Holdings Co., Ltd.
- Liquid-liquid extraction system for electroactive metal electrodeposition from brine20 Aug 2026US 2026/0242970 A1Pure Lithium Corporation
- Material23 Jul 2026US 2026/0208124 A1
- Method for extracting a component from a solution using hollow fibers15 Jan 2026US 2026/0014555 A1
Most cited
By later US patents
- Membrane solvent extraction82US 3,956,112 AAllied Chemical Corporation · 1976
- Membrane hydro-metallurgical extraction process60US 3,957,504 AAllied Chemical Corporation · 1976
- Supported liquid membrane separation52US 6,086,769 ACommodore Separation Technologies, Inc. · 2000
- Asymmetrically-wettable porous membrane process49US 4,921,612 AThe Trustees of the Stevens Institute of Technology · 1990
- Asymmetrically-wettable porous membrane47US 5,053,132 AThe Trustees of the Stevens Institute of Technology · 1991