B01D 2239/0428
Rendering the filter material hydrophobic
B01D2239/0428 (Rendering the filter material hydrophobic) appears on 231 US grants and 341 published applications in this corpus.
Search patents in B01D- Granted patents
- 231
- Published applications
- 341
- Assignees
- 212
- Inventors
- 810
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 6 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 8 | 0 |
| 2000 | 6 | 0 |
| 2001 | 4 | 2 |
| 2002 | 3 | 6 |
| 2003 | 2 | 1 |
| 2004 | 6 | 5 |
| 2005 | 2 | 1 |
| 2006 | 2 | 6 |
| 2007 | 3 | 6 |
| 2008 | 5 | 3 |
| 2009 | 1 | 3 |
| 2010 | 2 | 7 |
| 2011 | 3 | 9 |
| 2012 | 3 | 4 |
| 2013 | 6 | 9 |
| 2014 | 1 | 8 |
| 2015 | 6 | 7 |
| 2016 | 4 | 13 |
| 2017 | 2 | 8 |
| 2018 | 4 | 7 |
| 2019 | 9 | 19 |
| 2020 | 12 | 23 |
| 2021 | 13 | 44 |
| 2022 | 12 | 57 |
| 2023 | 19 | 36 |
| 2024 | 18 | 21 |
| 2025 | 28 | 25 |
| 2026 | 15 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Oil and fuel collector25 Aug 2026US 12,714,951 B2Manvers Engineering Limited
- Coalescer filter media7 Jul 2026US 12,673,282 B2Hollingsworth & Vose Company
- Liquid chemical and method for producing liquid chemical9 Jun 2026US 12,650,647 B2FUJIFILM Corporation
- Methods, apparatuses, and systems for providing personal protective equipment2 Jun 2026US 12,642,315 B2Honeywell Safety Products USA, Inc.
- Non-passive anti-viral and nanofilter based respirators2 Jun 2026US 12,643,063 B1University of Louisville Research Foundation, Inc.
- Method for preparing a composite filter medium and the composite filter medium obtained with this method1 Oct 2026US 2026/0295484 A1Saati S.P.A.
- Communicating filter plants27 Aug 2026US 2026/0249226 A1Kappa Filter Systems GmbH
- Coated nonwoven article derived from porous polymeric fibers and methods thereof13 Aug 2026US 2026/0234865 A13M Innovative Properties Company
- Fluorocarbon-free filtration media9 Jul 2026US 2026/0192223 A1Unifrax I LLC
- Moisture and particulate filtration system18 Jun 2026US 2026/0166462 A1Brookaire Company, LLC
Most cited
By later US patents
- Polymer, polymer microfiber, polymer nanofiber and applications including filter structures252US 6,743,273 B2Donaldson Company, Inc. · 2004
- Process if making fine fiber material131US 6,955,775 B2Donaldson Company, Inc. · 2005
- Polymer, polymer microfiber, polymer nanofiber and applications including filter structures120US 6,924,028 B2Donaldson Company, Inc. · 2005
- Highly porous polyvinylidene difluoride membranes115US 6,146,747 AUSF Filtration and Separations Group, Inc. · 2000
- Filter sheet material for passenger cabins in motor vehicles112US 5,350,443 A1994