B01D 2239/0604
Arrangement of the fibres in the filtering material
B01D2239/0604 (Arrangement of the fibres in the filtering material) appears on 1,041 US grants and 1,497 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,041
- Published applications
- 1,497
- Assignees
- 672
- Inventors
- 3,020
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 7 | 0 |
| 1989 | 8 | 0 |
| 1990 | 12 | 0 |
| 1991 | 7 | 0 |
| 1992 | 12 | 0 |
| 1993 | 21 | 0 |
| 1994 | 15 | 0 |
| 1995 | 26 | 0 |
| 1996 | 13 | 0 |
| 1997 | 35 | 0 |
| 1998 | 28 | 0 |
| 1999 | 29 | 0 |
| 2000 | 27 | 0 |
| 2001 | 13 | 4 |
| 2002 | 12 | 14 |
| 2003 | 5 | 13 |
| 2004 | 12 | 30 |
| 2005 | 10 | 15 |
| 2006 | 13 | 27 |
| 2007 | 10 | 27 |
| 2008 | 10 | 22 |
| 2009 | 13 | 32 |
| 2010 | 16 | 42 |
| 2011 | 22 | 48 |
| 2012 | 24 | 43 |
| 2013 | 27 | 37 |
| 2014 | 19 | 39 |
| 2015 | 24 | 51 |
| 2016 | 25 | 58 |
| 2017 | 21 | 61 |
| 2018 | 18 | 55 |
| 2019 | 59 | 75 |
| 2020 | 40 | 98 |
| 2021 | 60 | 144 |
| 2022 | 57 | 152 |
| 2023 | 44 | 165 |
| 2024 | 70 | 99 |
| 2025 | 76 | 77 |
| 2026 | 57 | 69 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 2239/0622Melt-blownIndexing code363
- B01D 2239/0618Non-wovenIndexing code348
- B01D 2239/064The fibres being mixedIndexing code308
- B01D 2239/0627Spun-bondedIndexing code260
- B01D 2239/0613WovenIndexing code157
- B01D 2239/0631Electro-spunIndexing code133
- B01D 2239/0636Two or more types of fibres present in the filter materialIndexing code115
- B01D 2239/0609KnittedIndexing code37
Recent patents
- Polyethersulfone fiber webs22 Sep 2026US 12,741,243 B2Hollingsworth & Vose Company
- Personal protective anti-viral face mask15 Sep 2026US 12,734,378 B2lowa State University Research Foundation, Inc.
- Preparation method of bismuth ion filter membrane and application thereof15 Sep 2026US 12,734,470 B2Work Together Marketing Consultant Limited
- High efficiency synthetic filter media1 Sep 2026US 12,722,107 B2Knowlton Technologies, LLC
- Oil and fuel collector25 Aug 2026US 12,714,951 B2Manvers Engineering Limited
- Multifunctional filter materials8 Oct 2026US 2026/0305741 A1Khalifa University of Science and Technology
- Filter material, method for producing the filter material, and use of melt-blown polypropylene fibers8 Oct 2026US 2026/0306979 A1Carl Freudenberg KG
- Method for preparing a composite filter medium and the composite filter medium obtained with this method1 Oct 2026US 2026/0295484 A1Saati S.P.A.
- Sanitary mask sheet17 Sep 2026US 2026/0272077 A1Kao Corporation
- Methods of reducing the enzymatic hydrolysis activity rate in a composition obtained from a purification platform17 Sep 2026US 2026/0274889 A1Genentech, Inc.
Most cited
By later US patents
- Melt-blown fibrous web1,019US 5,582,907 APall Corporation · 1996
- Blood filter and method of filtration941US 5,190,657 ALydall, Inc. · 1993
- Web of blended microfibers and crimped bulking fibers445US 4,118,531 AMinnesota Mining and Manufacturing Company · 1978
- Deformable well screen320US 5,901,789 AShell Oil Company · 1999
- Bicomponent fibers and webs made therefrom302US 4,795,668 AMinnesota Mining and Manufacturing Company · 1989