B01D 46/0004
Details of removable closures, lids, caps or filter heads
Official title: {Details of removable closures, lids, caps or filter heads}
B01D46/0004 (Details of removable closures, lids, caps or filter heads) appears on 622 US grants and 664 published applications in this corpus.
Search patents in B01D- Granted patents
- 622
- Published applications
- 664
- Assignees
- 304
- Inventors
- 1,182
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 6 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 11 | 0 |
| 1999 | 9 | 0 |
| 2000 | 5 | 0 |
| 2001 | 8 | 1 |
| 2002 | 14 | 10 |
| 2003 | 17 | 13 |
| 2004 | 8 | 18 |
| 2005 | 9 | 12 |
| 2006 | 6 | 17 |
| 2007 | 8 | 13 |
| 2008 | 7 | 15 |
| 2009 | 11 | 20 |
| 2010 | 14 | 26 |
| 2011 | 19 | 13 |
| 2012 | 24 | 17 |
| 2013 | 17 | 22 |
| 2014 | 18 | 35 |
| 2015 | 20 | 36 |
| 2016 | 34 | 24 |
| 2017 | 13 | 28 |
| 2018 | 21 | 24 |
| 2019 | 37 | 39 |
| 2020 | 32 | 43 |
| 2021 | 21 | 47 |
| 2022 | 36 | 47 |
| 2023 | 30 | 45 |
| 2024 | 49 | 44 |
| 2025 | 42 | 31 |
| 2026 | 21 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Drain discharge structure in compressed pneumatic circuit8 Sep 2026US 12,728,385 B2Fukuhara Co., Ltd.
- Air purifier8 Sep 2026US 12,729,867 B2Shenzhen Chenbei Technology Co., Ltd.
- Brake dust collector18 Aug 2026US 12,710,080 B2Hl Mando Corporation
- Folding cover for air filter unit1 Oct 2026US 2026/0295486 A1Ctt Trading Asia Limited
- Filter Apparatus17 Sep 2026US 2026/0273443 A1Hydac Filter Systems GmbH
- Air Purifier27 Aug 2026US 2026/0251347 A1Shenzhen Chenbei Technology Co., Ltd.
- Filter Lift Apparatus and Method20 Aug 2026US 2026/0241316 A1
- Filter housing cover and related filter assembly13 Aug 2026US 2026/0233139 A1Donaldson Company, Inc.
Most cited
By later US patents
- Air cleaner having sealing arrangement between media arrangement and housing342US 6,179,890 B2Donaldson Company, Inc. · 2001
- Filter element having flange and methods266US 6,517,598 B2Donaldson Company, Inc. · 2003
- Filter element having sealing members and methods265US 6,610,126 B2Donaldson Company, Inc. · 2003
- Air filter element with radial seal sealing gasket260US 5,484,466 ABaldwin Filters, Inc. · 1996
- Air filter having fluted filter media207US 7,396,375 B2Donaldson Company, Inc. · 2008