B01D 39/2017
The material being filamentary or fibrous
Official title: {the material being filamentary or fibrous}
B01D39/2017 (The material being filamentary or fibrous) appears on 563 US grants and 625 published applications in this corpus.
Search patents in B01D- Granted patents
- 563
- Published applications
- 625
- Assignees
- 340
- Inventors
- 1,312
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 12 | 0 |
| 1978 | 12 | 0 |
| 1979 | 7 | 0 |
| 1980 | 7 | 0 |
| 1981 | 7 | 0 |
| 1982 | 7 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 6 | 0 |
| 1987 | 9 | 0 |
| 1988 | 8 | 0 |
| 1989 | 9 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 8 | 0 |
| 1994 | 5 | 0 |
| 1995 | 6 | 0 |
| 1996 | 2 | 0 |
| 1997 | 9 | 0 |
| 1998 | 14 | 0 |
| 1999 | 15 | 0 |
| 2000 | 13 | 0 |
| 2001 | 11 | 10 |
| 2002 | 17 | 14 |
| 2003 | 16 | 28 |
| 2004 | 12 | 19 |
| 2005 | 16 | 13 |
| 2006 | 10 | 27 |
| 2007 | 16 | 16 |
| 2008 | 9 | 16 |
| 2009 | 4 | 12 |
| 2010 | 5 | 15 |
| 2011 | 15 | 22 |
| 2012 | 19 | 22 |
| 2013 | 10 | 16 |
| 2014 | 14 | 28 |
| 2015 | 19 | 15 |
| 2016 | 7 | 30 |
| 2017 | 13 | 20 |
| 2018 | 9 | 29 |
| 2019 | 20 | 33 |
| 2020 | 24 | 21 |
| 2021 | 17 | 45 |
| 2022 | 19 | 56 |
| 2023 | 25 | 50 |
| 2024 | 24 | 26 |
| 2025 | 22 | 26 |
| 2026 | 16 | 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 efficiency synthetic filter media1 Sep 2026US 12,722,107 B2Knowlton Technologies, LLC
- Anti-microbial filter18 Aug 2026US 12,708,690 B2Acell Industries Limited
- 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
- Inorganic fiber sheet23 Jul 2026US 2026/0208083 A1Tomoegawa Co., Ltd.
- Graphene Functionalized HEPA Filter23 Jul 2026US 2026/0208085 A1University of Connecticut
- Filter Sheet Media and Method for Manufacturing a Filter Sheet Media9 Jul 2026US 2026/0192222 A1Ahlstrom Oyj
- Fluorocarbon-free filtration media9 Jul 2026US 2026/0192223 A1Unifrax I LLC
- Filter material for air filter, and method for manufacturing same25 Jun 2026US 2026/0175152 A1Hokuetsu Corporation
Most cited
By later US patents
- Filter material construction and method335US 5,672,399 ADonaldson Company, Inc. · 1997
- Process and composition for separating plasma or serum from whole blood317US 4,477,575 ABoehringer Mannheim GmbH · 1984
- Blood separation device comprising a filter and a capillary flow pathway exiting the filter254US 4,753,776 ABiotrack, Inc. · 1988
- Cleanable high efficiency filter media structure and applications for use231US 7,008,465 B2Donaldson Company, Inc. · 2006
- Filter medium and structure212US 7,314,497 B2Donaldson Company, Inc. · 2008