B01D 2221/16
Separation devices for cleaning ambient air
Official title: Separation devices for cleaning ambient air, e.g. air along roads or air in cities
B01D2221/16 (Separation devices for cleaning ambient air) appears on 34 US grants and 47 published applications in this corpus.
Search patents in B01D- Granted patents
- 34
- Published applications
- 47
- Assignees
- 35
- Inventors
- 128
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 1 | 2 |
| 2014 | 1 | 0 |
| 2015 | 1 | 1 |
| 2016 | 1 | 3 |
| 2017 | 2 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 2 |
| 2020 | 1 | 5 |
| 2021 | 4 | 2 |
| 2022 | 4 | 2 |
| 2023 | 3 | 9 |
| 2024 | 3 | 6 |
| 2025 | 3 | 6 |
| 2026 | 5 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Carbon capture entrainment system and method29 Sep 2026US 12,746,507 B2Purdue Research Foundation
- Atmospheric carbon dioxide removal process21 Jul 2026US 12,685,964 B1
- Intensified carbon capture using building infrastructure12 May 2026US 12,623,180 B2UT-Battelle, LLC
- Fully automated direct air capture carbon dioxide processing system5 May 2026US 12,616,934 B2AirMyne, Inc.
- Fully automated direct air capture carbon dioxide processing system14 Apr 2026US 12,599,867 B2AirMyne, Inc.
- A method of capturing carbon dioxide from atmospheric air1 Oct 2026US 2026/0295497 A1Repsol, S. A.
- Environmental heat-driven liquid regenerator method24 Sep 2026US 2026/0284581 A1
- Acoustic separation of CO2 from the atmosphere10 Sep 2026US 2026/0264018 A1
- Self-Regenerating Atmospheric Water Generator for Low-Humidity Climates23 Jul 2026US 2026/0208067 A1
- Improvements to energy performance in CO2 capture23 Jul 2026US 2026/0208096 A1Equinor Low Carbon UK Limited
Most cited
By later US patents
- Apparatus and method for separating particles from a cyclonic fluid flow270US 6,251,296 B1G. B. D. Corp. · 2001
- Apparatus for separation media by centrifugal force29US 6,569,323 B12003
- Composition and method of dust suppression wetting agents14US 9,694,309 B2Cashmir · 2017
- Fully automated direct air capture carbon dioxide processing system8US 11,612,853 B1AirMyne, Inc. · 2023
- Continuous processes and systems to reduce energy requirements of using zeolites for carbon capture under humid conditions5US 11,738,301 B2Carbon Capture Inc. · 2023