B01D 2239/1291
Other parameters
B01D2239/1291 (Other parameters) appears on 507 US grants and 663 published applications in this corpus.
Search patents in B01D- Granted patents
- 507
- Published applications
- 663
- Assignees
- 379
- Inventors
- 1,626
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 5 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 7 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 11 | 0 |
| 1994 | 11 | 0 |
| 1995 | 14 | 0 |
| 1996 | 6 | 0 |
| 1997 | 26 | 0 |
| 1998 | 24 | 0 |
| 1999 | 20 | 0 |
| 2000 | 20 | 0 |
| 2001 | 14 | 1 |
| 2002 | 8 | 7 |
| 2003 | 6 | 8 |
| 2004 | 7 | 21 |
| 2005 | 4 | 4 |
| 2006 | 5 | 7 |
| 2007 | 5 | 14 |
| 2008 | 2 | 5 |
| 2009 | 8 | 16 |
| 2010 | 9 | 18 |
| 2011 | 6 | 14 |
| 2012 | 13 | 20 |
| 2013 | 9 | 17 |
| 2014 | 11 | 10 |
| 2015 | 10 | 8 |
| 2016 | 7 | 19 |
| 2017 | 5 | 25 |
| 2018 | 7 | 20 |
| 2019 | 20 | 22 |
| 2020 | 15 | 30 |
| 2021 | 22 | 73 |
| 2022 | 14 | 77 |
| 2023 | 18 | 83 |
| 2024 | 30 | 51 |
| 2025 | 41 | 52 |
| 2026 | 31 | 41 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polyethersulfone fiber webs22 Sep 2026US 12,741,243 B2Hollingsworth & Vose Company
- Flue gas filtration media8 Sep 2026US 12,728,374 B2Ahlstrom Oyj
- 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
- Melt-blown nonwoven fabric, method of producing the same, layered body, filter for face mask, and face mask25 Aug 2026US 12,716,153 B2Kaneka Corporation
- Anti-microbial filter18 Aug 2026US 12,708,690 B2Acell Industries Limited
- Filter material, method for producing the filter material, and use of melt-blown polypropylene fibers8 Oct 2026US 2026/0306979 A1Carl Freudenberg KG
- System and method for deaeration1 Oct 2026US 2026/0295469 A1Donaldson Company, Inc.
- 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
- Deformable well screen320US 5,901,789 AShell Oil Company · 1999
- Method of charging electret filter media289US 5,496,507 AMinnesota Mining and Manufacturing Company · 1996
- Strong nonwoven fabrics from engineered multiconstituent fibers282US 5,108,827 AFiberweb North America, Inc. · 1992