B01D 2239/0421
Rendering the filter material hydrophilic
B01D2239/0421 (Rendering the filter material hydrophilic) appears on 179 US grants and 291 published applications in this corpus.
Search patents in B01D- Granted patents
- 179
- Published applications
- 291
- Assignees
- 176
- Inventors
- 753
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 3 |
| 2008 | 0 | 2 |
| 2009 | 1 | 2 |
| 2010 | 0 | 5 |
| 2011 | 1 | 8 |
| 2012 | 3 | 2 |
| 2013 | 3 | 5 |
| 2014 | 1 | 11 |
| 2015 | 3 | 11 |
| 2016 | 5 | 12 |
| 2017 | 1 | 12 |
| 2018 | 4 | 15 |
| 2019 | 14 | 13 |
| 2020 | 17 | 21 |
| 2021 | 9 | 33 |
| 2022 | 7 | 46 |
| 2023 | 17 | 33 |
| 2024 | 19 | 21 |
| 2025 | 12 | 25 |
| 2026 | 21 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Substrate treatments29 Sep 2026US 12,746,490 B2Donaldson Company, Inc.
- High-performance fabric for water/diesel separating filters22 Sep 2026US 12,741,236 B2Saati S.P.A.
- Oil and fuel collector25 Aug 2026US 12,714,951 B2Manvers Engineering Limited
- Surface-treated porous materials having filtration properties and methods of preparing them18 Aug 2026US 12,708,879 B2Aculon, Inc.
- System for continuous oil/water separation using superhydrophilic oil/water separation filter14 Jul 2026US 12,678,713 B2Postech Research and Business Development Foundation
- Multifunctional filter materials8 Oct 2026US 2026/0305741 A1Khalifa University of Science and Technology
- Coated nonwoven article derived from porous polymeric fibers and methods thereof13 Aug 2026US 2026/0234865 A13M Innovative Properties Company
- Water-Holding Fabric, Filter, Humidifier and Method for Manufacturing Water-Holding Fabric23 Jul 2026US 2026/0210005 A1Shenzhen Chenbei Technology Co., Ltd.
- Nonwoven fabrics including recycled polypropylene21 May 2026US 2026/0139418 A1Magnera Corporation
- Infection control filter label14 May 2026US 2026/0130526 A1Greenwood Marketing, LLC
Most cited
By later US patents
- Melt-blown fibrous web1,019US 5,582,907 APall Corporation · 1996
- Highly porous polyvinylidene difluoride membranes115US 6,146,747 AUSF Filtration and Separations Group, Inc. · 2000
- Hydrophobic membrane having hydrophilic and charged surface and process87US 5,137,633 AMillipore Corporation · 1992
- Fibrous web for processing a fluid77US 6,074,869 APall Corporation · 2000
- Chemically charged-modified filter for removing particles from a liquid and method thereof61US 5,855,788 AKimberly-Clark Worldwide, Inc. · 1999