B01D 2239/1258
Permeability
B01D2239/1258 (Permeability) appears on 210 US grants and 347 published applications in this corpus.
Search patents in B01D- Granted patents
- 210
- Published applications
- 347
- Assignees
- 157
- Inventors
- 691
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 1 |
| 2002 | 3 | 1 |
| 2003 | 0 | 1 |
| 2004 | 3 | 5 |
| 2005 | 2 | 1 |
| 2006 | 3 | 2 |
| 2007 | 2 | 6 |
| 2008 | 4 | 6 |
| 2009 | 2 | 1 |
| 2010 | 1 | 11 |
| 2011 | 5 | 7 |
| 2012 | 6 | 13 |
| 2013 | 6 | 11 |
| 2014 | 9 | 8 |
| 2015 | 4 | 7 |
| 2016 | 1 | 11 |
| 2017 | 7 | 16 |
| 2018 | 5 | 20 |
| 2019 | 9 | 18 |
| 2020 | 14 | 35 |
| 2021 | 16 | 38 |
| 2022 | 19 | 29 |
| 2023 | 15 | 43 |
| 2024 | 12 | 21 |
| 2025 | 17 | 23 |
| 2026 | 14 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- High efficiency synthetic filter media1 Sep 2026US 12,722,107 B2Knowlton Technologies, LLC
- Method for manufacturing a metallic functional part delimiting a porous filtering medium, using an additive manufacturing method, and obtained functional part25 Aug 2026US 12,714,960 B2Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Biodegradable filters11 Aug 2026US 12,702,942 B2NxtNano, LLC
- Filter material for air filter and method for producing filter material14 Jul 2026US 12,678,724 B2Hokuetsu Corporation
- Coalescer filter media7 Jul 2026US 12,673,282 B2Hollingsworth & Vose Company
- Composite materials3 Sep 2026US 2026/0257159 A1DelStar Technologies, Inc.
- Shirred filter media and methods of making and using the same9 Jul 2026US 2026/0192220 A13M Innovative Properties Company
- Filter medium, filter pack, and filter unit9 Jul 2026US 2026/0192231 A1Daikin Industries, Ltd.
- Filter media and liquid filters7 May 2026US 2026/0124565 A1DelStar Technologies, Inc.
- Pulse filter7 May 2026US 2026/0124566 A1
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
- Nonwoven filter material130US 4,917,942 AMinnesota Mining and Manufacturing Company · 1990
- High stiffness nonwoven filter medium121US 5,709,735 AKimberly-Clark Worldwide, Inc. · 1998
- Polymer, polymer microfiber, polymer nanofiber and applications including filter structures120US 6,924,028 B2Donaldson Company, Inc. · 2005