B01D 2252/30
Ionic liquids and zwitter-ions
B01D2252/30 (Ionic liquids and zwitter-ions) appears on 185 US grants and 313 published applications in this corpus.
Search patents in B01D- Granted patents
- 185
- Published applications
- 313
- Assignees
- 145
- Inventors
- 656
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 0 |
| 2010 | 2 | 5 |
| 2011 | 2 | 24 |
| 2012 | 4 | 29 |
| 2013 | 7 | 14 |
| 2014 | 16 | 14 |
| 2015 | 15 | 21 |
| 2016 | 12 | 23 |
| 2017 | 13 | 17 |
| 2018 | 18 | 21 |
| 2019 | 20 | 12 |
| 2020 | 7 | 12 |
| 2021 | 14 | 21 |
| 2022 | 12 | 12 |
| 2023 | 9 | 20 |
| 2024 | 12 | 16 |
| 2025 | 14 | 35 |
| 2026 | 5 | 12 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Contaminent removal system using separate liquid sorbent loops23 Jun 2026US 12,661,613 B2Honeywell International Inc.
- Method for capturing CO221 Apr 2026US 12,605,673 B2Petroleo Brasileiro S.A. - Petrobras
- Membrane-based desorption cooling method for passive thermal management14 Apr 2026US 12,599,866 B2City University of Hong Kong
- Composition for carbon dioxide absorption31 Mar 2026US 12,589,350 B2Nihon University
- Acidic gas separation device, air purifier, air conditioner, and acidic gas concentration device31 Mar 2026US 12,589,354 B2Kuraray Co., Ltd.
- Integrated process for removing carbon dioxide from a ship or offshore floating vessel using a rotating packed device20 Aug 2026US 2026/0243184 A1Chevron U.S.A.Inc.
- Atmospheric Water Generation Systems Encompassing Hygroscopic Media and Methods of Using the Same6 Aug 2026US 2026/0225034 A1Genesis Systems LLC
- Methods of control for co2 capture systems using molten salts16 Jul 2026US 2026/0199829 A1Mantel Capture, Inc.
- Contaminant removal systems4 Jun 2026US 2026/0151728 A1Honeywell International Inc.
- Atmospheric carbon dioxide capture system28 May 2026US 2026/0146341 A1Robert Bosch GmbH
Most cited
By later US patents
- Method and apparatus for extracting carbon dioxide from air125US 7,708,806 B2Global Research Technologies, LLC · 2010
- Functionalized ionic liquids, and methods of use thereof64US 7,208,605 B2University of South Alabama · 2007
- Method and apparatus for extracting carbon dioxide from air48US 8,083,836 B2Kilimanjaro Energy, Inc. · 2011
- Kinetic fractionators, and cycling processes for fractionation of gas mixtures45US 8,921,637 B2ExxonMobil Upstream Research Company · 2014
- Kinetic fractionators, and cycling processes for fractionation of gas mixtures44US 9,028,595 B2ExxonMobil Upstream Research Company · 2015