B01D 2325/38
Hydrophobic membranes
B01D2325/38 (Hydrophobic membranes) appears on 435 US grants and 607 published applications in this corpus.
Search patents in B01D- Granted patents
- 435
- Published applications
- 607
- Assignees
- 358
- Inventors
- 1,465
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 1 | 0 |
| 1999 | 11 | 0 |
| 2000 | 7 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 3 |
| 2003 | 3 | 1 |
| 2004 | 2 | 7 |
| 2005 | 2 | 6 |
| 2006 | 0 | 7 |
| 2007 | 3 | 12 |
| 2008 | 5 | 15 |
| 2009 | 1 | 14 |
| 2010 | 4 | 20 |
| 2011 | 5 | 27 |
| 2012 | 17 | 16 |
| 2013 | 13 | 22 |
| 2014 | 12 | 21 |
| 2015 | 13 | 42 |
| 2016 | 16 | 39 |
| 2017 | 32 | 37 |
| 2018 | 29 | 30 |
| 2019 | 26 | 20 |
| 2020 | 28 | 38 |
| 2021 | 29 | 38 |
| 2022 | 27 | 49 |
| 2023 | 30 | 42 |
| 2024 | 26 | 34 |
| 2025 | 38 | 37 |
| 2026 | 18 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hollow fiber microporous membrane, and gas separation membrane module with same built thereinto6 Oct 2026US 12,752,243 B2Toray Industries, Inc.
- Systems and methods for harnessing thermal gradient energy18 Aug 2026US 12,712,192 B2
- Laminate11 Aug 2026US 12,703,777 B2Daicel Corporation
- System for continuous oil/water separation using superhydrophilic oil/water separation filter14 Jul 2026US 12,678,713 B2Postech Research and Business Development Foundation
- Method for converting osmotic energy into hydraulic energy and for desalination14 Jul 2026US 12,678,737 B2Centre National De La Recherche Scientifique
- Porous membrane and purification method8 Oct 2026US 2026/0307015 A1Toyobo Co., Ltd.
- Acid gas removal apparatus and acid gas removal method24 Sep 2026US 2026/0284580 A1Kabushiki Kaisha Toshiba
- Integrated fluidic devices and related methods17 Sep 2026US 2026/0273523 A1HelixBind, Inc.
- Process for the degradation of per- and polyfluorinated substances (pfas) using catalytic ozonolysis17 Sep 2026US 2026/0274720 A1The Board of Trustees of The University of Alabama
- Method for Organic-Solvent Removal27 Aug 2026US 2026/0249247 A1Asahi Kasei Kabushiki Kaisha
Most cited
By later US patents
- Process for preparing hydrophilic polyamide membrane filter media and product277US 4,340,479 APall Corporation · 1982
- Preparation of crosslinked matrices containing covalently immobilized chemical species and unbound releasable chemical species253US 5,563,056 ABSI Corporation · 1996
- Oil, water and sweat repellent microporous membrane materials136US 5,260,360 AMinnesota Mining and Manufacturing Company · 1993
- Block copolymers131US 5,834,583 ACirce Biomedical, Inc. · 1998
- Method and apparatus for extracting carbon dioxide from air125US 7,708,806 B2Global Research Technologies, LLC · 2010