B01D 2275/201
Conical shape
B01D2275/201 (Conical shape) appears on 242 US grants and 258 published applications in this corpus.
Search patents in B01D- Granted patents
- 242
- Published applications
- 258
- Assignees
- 106
- Inventors
- 476
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 8 | 0 |
| 2000 | 6 | 0 |
| 2001 | 3 | 1 |
| 2002 | 4 | 6 |
| 2003 | 7 | 6 |
| 2004 | 6 | 6 |
| 2005 | 2 | 2 |
| 2006 | 2 | 8 |
| 2007 | 2 | 6 |
| 2008 | 4 | 11 |
| 2009 | 7 | 11 |
| 2010 | 5 | 12 |
| 2011 | 4 | 8 |
| 2012 | 8 | 10 |
| 2013 | 10 | 5 |
| 2014 | 6 | 7 |
| 2015 | 7 | 14 |
| 2016 | 10 | 13 |
| 2017 | 7 | 14 |
| 2018 | 10 | 8 |
| 2019 | 11 | 19 |
| 2020 | 9 | 18 |
| 2021 | 15 | 10 |
| 2022 | 17 | 14 |
| 2023 | 12 | 13 |
| 2024 | 10 | 19 |
| 2025 | 5 | 5 |
| 2026 | 4 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Filter unit with a filter block, a damping layer and a housing, and process of manufacturing such a filter unit6 Oct 2026US 12,752,136 B2Dräger Safety AG & Co. KGaA
- Filter device for compressed air21 Jul 2026US 12,685,955 B2
- Air filtration cassette, an air filter and a filter arrangement24 Feb 2026US 12,558,646 B2Camfil Aktiebolag
- Compact air cleaner assembly wth noise reduction device6 Jan 2026US 12,515,161 B2Cummins Filtration Inc.
- Filter element with closed endcap forming a seal positioned at different axial distances16 Dec 2025US 12,496,546 B2Cummins Filtration Inc.
- Automotive air filters with hydrocarbon-absorbing media8 Oct 2026US 2026/0306983 A1
- Filter element and filter system27 Aug 2026US 2026/0249227 A1Mann+Hummel GmbH
- Filter elements, related filter assembly and filter package13 Aug 2026US 2026/0233144 A1Donaldson Company, Inc.
- Filter element having two filter medium bodies arranged one inside the other9 Jul 2026US 2026/0192233 A1Mann+Hummel GmbH
- Filter device for compressed air2 Jul 2026US 2026/0183692 A1
Most cited
By later US patents
- Conical filter341US 5,902,364 ADonaldson Company, Inc. · 1999
- Air filter arrangement; assembly; and, methods203US 7,625,419 B2Donaldson Company, Inc. · 2009
- Multi-panel fluid filter with equalized contaminant passages183US 6,482,247 B2Nelson Industries, Inc. · 2002
- Air cleaner; replaceable filter cartridges; and, methods141US 7,070,642 B2Donaldson Company, Inc. · 2006
- Vacuum cleaner and filter thereof136US 5,248,323 AHealth-Mor, Inc. · 1993