B01D 2239/0414
Surface modifiers
Official title: Surface modifiers, e.g. comprising ion exchange groups
B01D2239/0414 (Surface modifiers) appears on 441 US grants and 622 published applications in this corpus.
Search patents in B01D- Granted patents
- 441
- Published applications
- 622
- Assignees
- 361
- Inventors
- 1,500
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 8 | 0 |
| 1995 | 9 | 0 |
| 1996 | 5 | 0 |
| 1997 | 7 | 0 |
| 1998 | 12 | 0 |
| 1999 | 13 | 0 |
| 2000 | 10 | 0 |
| 2001 | 7 | 3 |
| 2002 | 4 | 6 |
| 2003 | 2 | 1 |
| 2004 | 7 | 9 |
| 2005 | 4 | 9 |
| 2006 | 6 | 11 |
| 2007 | 5 | 16 |
| 2008 | 7 | 7 |
| 2009 | 5 | 10 |
| 2010 | 3 | 19 |
| 2011 | 9 | 22 |
| 2012 | 7 | 9 |
| 2013 | 10 | 14 |
| 2014 | 4 | 20 |
| 2015 | 11 | 19 |
| 2016 | 10 | 20 |
| 2017 | 7 | 20 |
| 2018 | 6 | 23 |
| 2019 | 21 | 32 |
| 2020 | 27 | 40 |
| 2021 | 24 | 71 |
| 2022 | 19 | 87 |
| 2023 | 30 | 60 |
| 2024 | 36 | 37 |
| 2025 | 40 | 41 |
| 2026 | 31 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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.
- Polyethersulfone fiber webs22 Sep 2026US 12,741,243 B2Hollingsworth & Vose Company
- 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.
- Multifunctional filter materials8 Oct 2026US 2026/0305741 A1Khalifa University of Science and Technology
- 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
- Functionalized porous material and related methods6 Aug 2026US 2026/0225072 A1Battelle Savannah River Alliance, LLC
Most cited
By later US patents
- Melt-blown fibrous web1,019US 5,582,907 APall Corporation · 1996
- Strong nonwoven fabrics from engineered multiconstituent fibers282US 5,108,827 AFiberweb North America, Inc. · 1992
- 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
- Strong nonwoven fabric laminates from engineered multiconstituent fibers125US 5,294,482 AFiberweb North America, Inc. · 1994