B01D 61/2461
Comprising multiple membrane extraction steps
Official title: {comprising multiple membrane extraction steps}
B01D61/2461 (Comprising multiple membrane extraction steps) appears on 32 US grants and 26 published applications in this corpus.
Search patents in B01D- Granted patents
- 32
- Published applications
- 26
- Assignees
- 29
- Inventors
- 95
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 4 |
| 2006 | 0 | 3 |
| 2007 | 4 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 3 |
| 2018 | 1 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 2 |
| 2021 | 2 | 2 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 1 |
| 2025 | 3 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods to assess and reduce salt levels in a MRU21 Jul 2026US 12,687,537 B2Saudi Arabian Oil Company
- Continuous process and system for the production of sodium bicarbonate crystals2 Dec 2025US 12,486,175 B2Université Catholique De Louvain
- Evaluation method for protein-containing solution2 Sep 2025US 12,403,428 B2Asahi Kasei Life Science Corporation
- Advanced anaerobic digestion to carboxylic acids22 Apr 2025US 12,281,346 B2Alliance for Sustainable Energy, LLC
- Phosphorus extraction and recovery system (PEARS)31 Aug 2021US 11,104,617 B2University of Maryland, Baltimore County
- Systems and methods to assess and reduce salt levels in a mru16 Jan 2025US 2025/0020626 A1Saudi Arabian Oil Company
- Continuous process and system for the production of sodium bicarbonate crystals4 Jan 2024US 2024/0002246 A1Université Catholique De Louvain
- Evaluation method for protein-containing solution10 Aug 2023US 2023/0249135 A1Asahi Kasei Medical Co., Ltd.
- Advanced anaerobic digestion to carboxylic acids11 Nov 2021US 2021/0348201 A1Alliance for Sustainable Energy, LLC
- Improving the sensory quality profile of plant protein based compositions5 Aug 2021US 2021/0235721 A1Societe des Produits Nestle S. A.
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
- Asymmetrically-wettable porous membrane process49US 4,921,612 AThe Trustees of the Stevens Institute of Technology · 1990
- Immobilized-interface solute-transfer apparatus43US 4,789,468 AThe Trustees of the Stevens Institute of Technology · 1988
- Production of low-ethanol beverages by membrane extraction32US 4,778,688 ASepracor Inc. · 1988