B01D 46/4227
Manipulating filters or filter elements
Official title: {Manipulating filters or filter elements, e.g. handles or extracting tools}
B01D46/4227 (Manipulating filters or filter elements) appears on 490 US grants and 548 published applications in this corpus.
Search patents in B01D- Granted patents
- 490
- Published applications
- 548
- Assignees
- 216
- Inventors
- 902
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 6 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 6 | 0 |
| 2001 | 5 | 0 |
| 2002 | 4 | 6 |
| 2003 | 5 | 3 |
| 2004 | 5 | 9 |
| 2005 | 6 | 14 |
| 2006 | 9 | 10 |
| 2007 | 8 | 12 |
| 2008 | 10 | 11 |
| 2009 | 5 | 7 |
| 2010 | 6 | 20 |
| 2011 | 15 | 9 |
| 2012 | 13 | 18 |
| 2013 | 18 | 9 |
| 2014 | 16 | 28 |
| 2015 | 11 | 21 |
| 2016 | 19 | 23 |
| 2017 | 20 | 40 |
| 2018 | 24 | 22 |
| 2019 | 28 | 27 |
| 2020 | 25 | 48 |
| 2021 | 25 | 50 |
| 2022 | 38 | 44 |
| 2023 | 44 | 50 |
| 2024 | 31 | 26 |
| 2025 | 35 | 25 |
| 2026 | 16 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air conditioning and filtration system29 Sep 2026US 12,746,502 B2Work Air Technologies Pty Ltd
- Filter systems with filter bag assemblies including filter bags with radial seal gaskets2 Jun 2026US 12,643,065 B2Donaldson Company, Inc.
- Compact room air purifier with integrated gaskets26 May 2026US 12,636,601 B23M Innovative Properties Company
- Automatically renewing air filter19 May 2026US 12,629,623 B2Infinity Filter, LLC
- Air filter element19 May 2026US 12,629,624 B2Volvo Truck Corporation
- Filter systems with filter bag assemblies including filter bags with radial seal gaskets17 Sep 2026US 2026/0273447 A1Donaldson Company, Inc.
- Filter elements, related filter assembly and filter package10 Sep 2026US 2026/0263981 A1Donaldson Company, Inc.
- Air filter element27 Aug 2026US 2026/0249225 A1Volvo Truck Corporation
- Air filter lift assembly20 Aug 2026US 2026/0242190 A1
- Filter housing cover and related filter assembly13 Aug 2026US 2026/0233139 A1Donaldson Company, Inc.
Most cited
By later US patents
- Filter element incorporating a handle member390US 6,235,195 B1Donaldson Company, Inc. · 2001
- Air filter arrangement having first and second filter media dividing a housing and methods343US 6,210,469 B1Donaldson Company, Inc. · 2001
- Air filter cartridge305US 6,966,940 B2Donaldson Company, Inc. · 2005
- Filter element, air cleaner, and methods268US 6,348,084 B1Donaldson Company, Inc. · 2002
- Filter element having flange and methods266US 6,517,598 B2Donaldson Company, Inc. · 2003