B01D 2275/10
Multiple layers
B01D2275/10 (Multiple layers) appears on 615 US grants and 609 published applications in this corpus.
Search patents in B01D- Granted patents
- 615
- Published applications
- 609
- Assignees
- 344
- Inventors
- 1,412
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 7 | 0 |
| 1982 | 6 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 7 | 0 |
| 1994 | 7 | 0 |
| 1995 | 9 | 0 |
| 1996 | 6 | 0 |
| 1997 | 23 | 0 |
| 1998 | 17 | 0 |
| 1999 | 18 | 0 |
| 2000 | 26 | 0 |
| 2001 | 23 | 6 |
| 2002 | 17 | 13 |
| 2003 | 14 | 22 |
| 2004 | 18 | 39 |
| 2005 | 21 | 20 |
| 2006 | 16 | 25 |
| 2007 | 14 | 27 |
| 2008 | 14 | 24 |
| 2009 | 8 | 24 |
| 2010 | 12 | 23 |
| 2011 | 17 | 18 |
| 2012 | 22 | 14 |
| 2013 | 15 | 15 |
| 2014 | 14 | 16 |
| 2015 | 14 | 15 |
| 2016 | 11 | 18 |
| 2017 | 15 | 39 |
| 2018 | 12 | 38 |
| 2019 | 30 | 31 |
| 2020 | 36 | 29 |
| 2021 | 15 | 35 |
| 2022 | 23 | 33 |
| 2023 | 16 | 25 |
| 2024 | 24 | 23 |
| 2025 | 21 | 24 |
| 2026 | 10 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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
- Filter device for compressed air21 Jul 2026US 12,685,955 B2
- Mask7 Jul 2026US 12,673,225 B2
- Zigzag-folded nonwoven material16 Jun 2026US 12,654,122 B2Irema-Filter GmbH
- Automatically renewing air filter19 May 2026US 12,629,623 B2Infinity Filter, LLC
- Coalescing separator insert, coalescing separator, and process for manufacturing a coalescing separator insert17 Sep 2026US 2026/0273446 A1Mann+Hummel GmbH
- Biostatic filter assembly for automotive hvac systems20 Aug 2026US 2026/0241319 A1Tesla, Inc.
- Surface cleaning apparatus with filter23 Jul 2026US 2026/0207025 A1BISSELL Inc.
- Filter device for compressed air2 Jul 2026US 2026/0183692 A1
- Axial flow centrifugal separator18 Jun 2026US 2026/0166459 A1Cummins Filtration IP, Inc.
Most cited
By later US patents
- Filter material construction and method335US 5,672,399 ADonaldson Company, Inc. · 1997
- Fluid filtering device309US 4,589,983 ADonaldson Company, Inc. · 1986
- Fluid filtering device255US 4,410,427 ADonaldson Company, Inc. · 1983
- Polymer, polymer microfiber, polymer nanofiber and applications including filter structures252US 6,743,273 B2Donaldson Company, Inc. · 2004
- Filtration arrangement and method242US 5,082,476 ADonaldson Company, Inc. · 1992