B01D 2239/1233
Fibre diameter
B01D2239/1233 (Fibre diameter) appears on 671 US grants and 923 published applications in this corpus.
Search patents in B01D- Granted patents
- 671
- Published applications
- 923
- Assignees
- 441
- Inventors
- 1,963
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 6 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 7 | 0 |
| 1989 | 6 | 0 |
| 1990 | 8 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 15 | 0 |
| 1994 | 11 | 0 |
| 1995 | 11 | 0 |
| 1996 | 7 | 0 |
| 1997 | 22 | 0 |
| 1998 | 21 | 0 |
| 1999 | 17 | 0 |
| 2000 | 15 | 0 |
| 2001 | 13 | 0 |
| 2002 | 5 | 6 |
| 2003 | 2 | 4 |
| 2004 | 8 | 14 |
| 2005 | 3 | 4 |
| 2006 | 5 | 8 |
| 2007 | 5 | 16 |
| 2008 | 7 | 12 |
| 2009 | 4 | 7 |
| 2010 | 2 | 19 |
| 2011 | 9 | 20 |
| 2012 | 7 | 23 |
| 2013 | 18 | 28 |
| 2014 | 10 | 29 |
| 2015 | 19 | 24 |
| 2016 | 11 | 50 |
| 2017 | 19 | 43 |
| 2018 | 18 | 50 |
| 2019 | 53 | 54 |
| 2020 | 41 | 61 |
| 2021 | 34 | 76 |
| 2022 | 34 | 101 |
| 2023 | 29 | 103 |
| 2024 | 39 | 67 |
| 2025 | 49 | 56 |
| 2026 | 39 | 48 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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
- 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
- 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
- Depth filter10 Sep 2026US 2026/0263976 A1Jnc Corporation
- Depth filter10 Sep 2026US 2026/0263977 A1Jnc Corporation
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
- Bicomponent fibers and webs made therefrom302US 4,795,668 AMinnesota Mining and Manufacturing Company · 1989
- Method of charging electret filter media289US 5,496,507 AMinnesota Mining and Manufacturing Company · 1996