B01D 2279/40
Filters adapted for separating dispersed particles from gases or vapours specially modified
Official title: for cleaning of environmental air, e.g. by filters installed on vehicles or on streets
B01D2279/40 (Filters adapted for separating dispersed particles from gases or vapours specially modified) appears on 177 US grants and 313 published applications in this corpus.
Search patents in B01D- Granted patents
- 177
- Published applications
- 313
- Assignees
- 160
- Inventors
- 726
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 1 | 2 |
| 2012 | 0 | 1 |
| 2013 | 2 | 2 |
| 2014 | 0 | 2 |
| 2015 | 0 | 1 |
| 2016 | 5 | 7 |
| 2017 | 2 | 28 |
| 2018 | 5 | 21 |
| 2019 | 14 | 27 |
| 2020 | 20 | 26 |
| 2021 | 19 | 43 |
| 2022 | 29 | 56 |
| 2023 | 20 | 31 |
| 2024 | 23 | 19 |
| 2025 | 13 | 24 |
| 2026 | 15 | 17 |
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
- Humidifier29 Sep 2026US 12,747,879 B2LG Electronics Inc.
- Pollutant capturer and mobilizer8 Sep 2026US 12,729,640 B2
- Method for calculating filter load estimation, system for cleaning environmental air, and vehicle comprising same25 Aug 2026US 12,714,962 B2MANN+HUMMEL Ventures Pte. Ltd.
- Sanitary mask sheet21 Jul 2026US 12,685,352 B2Kao Corporation
- Stackable air treatment device8 Oct 2026US 2026/0306982 A1Carrier Corporation
- Add on auto clean assembly for a vacuum filtration system of a dry bulk trailer and method of using the same8 Oct 2026US 2026/0306984 A1Bulk Tank, Inc.
- Sanitary mask sheet17 Sep 2026US 2026/0272077 A1Kao Corporation
- Recovery management method, recovery management server, and adsorption device10 Sep 2026US 2026/0263986 A1Kojima Industries Corporation
- Biostatic filter assembly for automotive hvac systems20 Aug 2026US 2026/0241319 A1Tesla, Inc.
Most cited
By later US patents
- Mobile airborne air cleaning station81US 5,147,429 A1992
- Air filter element with retaining geometry46US 9,446,339 B2Mann+Hummel GmbH · 2016
- Electric powered hydraulic fracturing pump system with single electric powered multi-plunger pump fracturing trailers, filtration units, and slide out platform41US 10,914,155 B2U.S. Well Services, LLC · 2021
- Assembly, method, and motor vehicle for cleaning ambient air in the vicinity of an internal combustion engine30US 6,212,882 B1Volvo Personvagnar AB & Engelhard Corp. · 2001
- Reinforced plastic composite intermodal vehicle hauler28US 5,255,806 AStoughton Composites, Inc. · 1993