B01D 2325/36
Hydrophilic membranes
B01D2325/36 (Hydrophilic membranes) appears on 542 US grants and 699 published applications in this corpus.
Search patents in B01D- Granted patents
- 542
- Published applications
- 699
- Assignees
- 372
- Inventors
- 1,675
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 8 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 6 | 0 |
| 1999 | 14 | 0 |
| 2000 | 8 | 0 |
| 2001 | 3 | 2 |
| 2002 | 4 | 5 |
| 2003 | 10 | 7 |
| 2004 | 4 | 11 |
| 2005 | 8 | 9 |
| 2006 | 5 | 11 |
| 2007 | 7 | 18 |
| 2008 | 8 | 17 |
| 2009 | 5 | 15 |
| 2010 | 4 | 18 |
| 2011 | 12 | 26 |
| 2012 | 15 | 18 |
| 2013 | 11 | 19 |
| 2014 | 13 | 24 |
| 2015 | 12 | 45 |
| 2016 | 28 | 31 |
| 2017 | 29 | 48 |
| 2018 | 25 | 38 |
| 2019 | 38 | 36 |
| 2020 | 38 | 50 |
| 2021 | 33 | 51 |
| 2022 | 29 | 46 |
| 2023 | 34 | 48 |
| 2024 | 29 | 46 |
| 2025 | 41 | 31 |
| 2026 | 15 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method of forming a cross-linked polymeric membrane29 Sep 2026US 12,746,516 B2Seppure Pte Ltd
- Oil-water separation systems and methods of separating aqueous emulsions15 Sep 2026US 12,734,486 B2Aculon, Inc.
- Method of preparing reverse osmosis membrane with charged hydrogel and polyamide double network8 Sep 2026US 12,728,388 B2
- Method for preparing durable hydrophilic ultrafiltration membrane11 Aug 2026US 12,702,955 B2Tiangong University
- Laminate11 Aug 2026US 12,703,777 B2Daicel Corporation
- Salt-rejecting continuous passive solar thermal desalination via thin-film condensation8 Oct 2026US 2026/0307012 A1The Regents of the University of California
- Porous membrane and purification method8 Oct 2026US 2026/0307015 A1Toyobo Co., Ltd.
- Separation functional layer and separation membrane10 Sep 2026US 2026/0264001 A1Nitto Denko Corporation
- Mil-125-nh2 metal organic framework nanocomposite membrane for treating oily wastewater and a method of preparation thereof10 Sep 2026US 2026/0264025 A1King Fahd University of Petroleum and Minerals
- Membrane separation apparatus and engine exhaust apparatus20 Aug 2026US 2026/0241331 A1Hunan University
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
- Highly assymetric, hydrophilic, microfiltration membranes having large pore diameters156US 6,045,899 AUSF Filtration and Separations Group, Inc. · 2000
- Microfiltration membranes having high pore density and mixed isotropic and anisotropic structure148US 5,906,742 AUSF Filtration and Separations Group, Inc. · 1999
- Block copolymers131US 5,834,583 ACirce Biomedical, Inc. · 1998