B01D 2267/40
Different types of filters
B01D2267/40 (Different types of filters) appears on 314 US grants and 326 published applications in this corpus.
Search patents in B01D- Granted patents
- 314
- Published applications
- 326
- Assignees
- 189
- Inventors
- 679
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 13 | 0 |
| 1999 | 6 | 0 |
| 2000 | 8 | 0 |
| 2001 | 18 | 5 |
| 2002 | 8 | 17 |
| 2003 | 14 | 19 |
| 2004 | 15 | 16 |
| 2005 | 11 | 24 |
| 2006 | 18 | 18 |
| 2007 | 7 | 18 |
| 2008 | 14 | 8 |
| 2009 | 8 | 10 |
| 2010 | 4 | 11 |
| 2011 | 12 | 7 |
| 2012 | 7 | 8 |
| 2013 | 5 | 3 |
| 2014 | 8 | 7 |
| 2015 | 4 | 6 |
| 2016 | 7 | 7 |
| 2017 | 8 | 20 |
| 2018 | 5 | 10 |
| 2019 | 11 | 18 |
| 2020 | 16 | 8 |
| 2021 | 14 | 24 |
| 2022 | 4 | 17 |
| 2023 | 14 | 12 |
| 2024 | 13 | 13 |
| 2025 | 7 | 9 |
| 2026 | 4 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Vacuum cleaning device4 Aug 2026US 12,697,005 B2Black & Decker Inc.
- Stackable air treatment device14 Jul 2026US 12,678,725 B2Carrier Corporation
- Paint apparatus and filter module31 Mar 2026US 12,589,346 B2Taikisha Ltd.
- 3D printed filter center tube6 Jan 2026US 12,515,148 B2Caterpillar Inc.
- Filter module for the separation of overspray25 Nov 2025US 12,478,907 B2Carl Freudenberg KG
Most cited
By later US patents
- Filter arrangement; sealing system; and methods402US 6,190,432 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 cleaner having sealing arrangement between media arrangement and housing342US 6,179,890 B2Donaldson Company, Inc. · 2001
- Air filter cartridge305US 6,966,940 B2Donaldson Company, Inc. · 2005
- Filter arrangement; sealing system; and methods288US 6,350,291 B1Donaldson Company, Inc. · 2002