B01D 61/38
Liquid-membrane separation
B01D61/38 (Liquid-membrane separation) appears on 240 US grants and 121 published applications in this corpus.
Search patents in B01D- Granted patents
- 240
- Published applications
- 121
- Assignees
- 172
- Inventors
- 540
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 10 | 0 |
| 1978 | 7 | 0 |
| 1979 | 2 | 0 |
| 1980 | 7 | 0 |
| 1981 | 8 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 6 | 0 |
| 1988 | 13 | 0 |
| 1989 | 10 | 0 |
| 1990 | 12 | 0 |
| 1991 | 7 | 0 |
| 1992 | 10 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 6 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 6 | 0 |
| 2001 | 6 | 1 |
| 2002 | 3 | 3 |
| 2003 | 4 | 6 |
| 2004 | 3 | 0 |
| 2005 | 1 | 3 |
| 2006 | 0 | 2 |
| 2007 | 1 | 3 |
| 2008 | 1 | 2 |
| 2009 | 3 | 4 |
| 2010 | 3 | 3 |
| 2011 | 1 | 4 |
| 2012 | 2 | 7 |
| 2013 | 1 | 3 |
| 2014 | 4 | 5 |
| 2015 | 7 | 8 |
| 2016 | 6 | 6 |
| 2017 | 5 | 4 |
| 2018 | 2 | 9 |
| 2019 | 5 | 5 |
| 2020 | 4 | 10 |
| 2021 | 6 | 10 |
| 2022 | 9 | 2 |
| 2023 | 7 | 9 |
| 2024 | 3 | 2 |
| 2025 | 5 | 6 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Enhanced dual phase membranes for separating carbon from carbon-containing feed gases and separation methods using the same4 Aug 2026US 12,697,587 B2Luna Labs USA, LLC
- Porous polymeric cellulose prepared via cellulose crosslinking25 Nov 2025US 12,479,931 B2Nanopareil, LLC
- Selective extraction of thiophene from thiophene/n-heptane using a poly(vinyl acetate)/water membrane system23 Sep 2025US 12,420,242 B1King Saud University
- Ionic liquid composition for carbon dioxide separation membrane, carbon dioxide separation membrane holding said composition, and carbon dioxide concentration apparatus provided with said carbon dioxide separation membrane17 Jun 2025US 12,330,123 B2National Institute of Advanced Industrial Science and Technology
- Systems and methods of marker based direct integrity testing of membranes3 Jun 2025US 12,318,733 B21934612 Ontario Inc.
- Modified nanocellulose membranes and their use in filtration20 Aug 2026US 2026/0241344 A1Board of Trustees of the University of Arkansas
- Self-Assembled Ionic Liquid Layer21 May 2026US 2026/0138098 A1National Technology & Engineering Solutions of Sandia, LLC
- Hydrophilic and hydrophobic porous elastomers5 Mar 2026US 2026/0062528 A1Colorado State University Research Foundation
- Method for separation of a water-in-oil emulsion26 Feb 2026US 2026/0054231 A1King Fahd University of Petroleum and Minerals
- Membrane-based separation of micelle-associated pfas molecules13 Nov 2025US 2025/0345756 A1Gradiant Corporation
Most cited
By later US patents
- Continuous carbon dioxide and water removal system138US 5,281,254 AUnited Technologies Corporation · 1994
- Composite membrane for facilitated transport processes117US 5,082,472 A1992
- Gelatinous elastomer compositions and articles102US 6,552,109 B1Applied Elastomerics, Inc. · 2003
- Membrane dehumidification97US 4,900,448 AHoneywell Inc. · 1990
- Modified microporous structures92US 5,049,275 AHoechst Celanese Corporation · 1991