B01D 2275/40
Porous blocks
B01D2275/40 (Porous blocks) appears on 58 US grants and 74 published applications in this corpus.
Search patents in B01D- Granted patents
- 58
- Published applications
- 74
- Assignees
- 51
- Inventors
- 154
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 3 |
| 2004 | 2 | 3 |
| 2005 | 2 | 1 |
| 2006 | 2 | 2 |
| 2007 | 2 | 1 |
| 2008 | 0 | 4 |
| 2009 | 0 | 4 |
| 2010 | 5 | 6 |
| 2011 | 1 | 3 |
| 2012 | 1 | 2 |
| 2013 | 2 | 0 |
| 2014 | 0 | 2 |
| 2015 | 1 | 1 |
| 2016 | 2 | 4 |
| 2017 | 1 | 5 |
| 2018 | 1 | 1 |
| 2019 | 7 | 15 |
| 2020 | 5 | 1 |
| 2021 | 5 | 3 |
| 2022 | 4 | 2 |
| 2023 | 1 | 4 |
| 2024 | 3 | 5 |
| 2025 | 0 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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
- Anti-microbial filter18 Aug 2026US 12,708,690 B2Acell Industries Limited
- Gasket and frame assembly for air filter10 Dec 2024US 12,161,962 B2Baldwin Filters, Inc.
- Pressure and heat molded polymer tube with interlocking grommet15 Oct 2024US 12,115,473 B2Bulk Tank, Inc.
- Filter for an air-conditioning system of a vehicle and a method of installing such a filter2 Apr 2024US 11,945,286 B1
- Air/particle separation device comprising a rotary filter made of cellular material10 Jul 2025US 2025/0222381 A1Airbus SAS
- Gasket and frame assembly for air filter13 Feb 2025US 2025/0050261 A1Baldwin Filters, Inc.
- Filter for an air-conditioning system of a vehicle and a method of installing such a filter28 Nov 2024US 2024/0390830 A1Groove Technologies, Inc.
- Filter adaptable for use in an hvac system28 Nov 2024US 2024/0391301 A1Groove Technologies, Inc.
- Air filter arrangement and method of replacing several filter elements3 Oct 2024US 2024/0325962 A1Joseph Vogele AG
Most cited
By later US patents
- Flash-pyrolysis in a cyclone60US 7,202,389 B1Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO · 2007
- Fluid filter, method of making and using thereof47US 6,071,419 AProducts Unlimited, Inc. · 2000
- Power generation aftertreatment system having a particulate filter dimensioned to be interchangeable with a muffler35US 6,893,487 B2Caterpillar Inc. · 2005
- Porous membranes32US 5,655,212 AMicropyretics Heaters International, Inc. · 1997
- Surface cleaning apparatus27US 10,932,634 B2Omachron Intellectual Property Inc. · 2021