B01D 2252/504
Mixtures of two or more absorbents
B01D2252/504 (Mixtures of two or more absorbents) appears on 254 US grants and 363 published applications in this corpus.
Search patents in B01D- Granted patents
- 254
- Published applications
- 363
- Assignees
- 176
- Inventors
- 756
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 2 |
| 2010 | 2 | 3 |
| 2011 | 0 | 7 |
| 2012 | 2 | 20 |
| 2013 | 8 | 20 |
| 2014 | 11 | 17 |
| 2015 | 7 | 28 |
| 2016 | 24 | 26 |
| 2017 | 19 | 37 |
| 2018 | 24 | 29 |
| 2019 | 27 | 29 |
| 2020 | 21 | 20 |
| 2021 | 22 | 21 |
| 2022 | 23 | 20 |
| 2023 | 17 | 20 |
| 2024 | 21 | 22 |
| 2025 | 17 | 26 |
| 2026 | 8 | 14 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Hybrid carbon dioxide removal systems4 Aug 2026US 12,697,582 B2AirMyne, Inc.
- Method of scavenging hydrogen sulfide from sour gas well using mineral oil nanoemulsions23 Jun 2026US 12,662,619 B1King Fahd University of Petroleum and Minerals
- Composition for carbon dioxide separation and method for separating carbon dioxide9 Jun 2026US 12,649,145 B2Tosoh Corporation
- Formulations and methods to remove non-acidic sulfur compounds from gas streams26 May 2026US 12,637,627 B2Baker Hughes Oilfield Operations LLC
- Composition for carbon dioxide absorption31 Mar 2026US 12,589,350 B2Nihon University
- Composite amine absorption liquid1 Oct 2026US 2026/0295512 A1Mitsubishi Heavy Industries, Ltd.
- Composition for carbon dioxide separation and method for separating carbon dioxide17 Sep 2026US 2026/0273505 A1Tosoh Corporation
- Method for separating an exhaust-gas mixture containing hydrogen chloride, hydrogen and chlorosilanes30 Jul 2026US 2026/0216635 A1Wacker Chemie AG
- Reducing consumption of sulfiding agent in hydroprocessing of biofeedstocks25 Jun 2026US 2026/0175163 A1ExxonMobil Technology and Engineering Company
- Non-aqueous solvent formulations for acid gas capture18 Jun 2026US 2026/0166475 A1Research Triangle Institute
Most cited
By later US patents
- Variable capacity multiple-leg packed separation column22US 9,480,947 B2Saudi Arabian Oil Company · 2016
- CO2 recovery system and CO2 absorption liquid21US 8,568,520 B2Kabushiki Kaisha Toshiba · 2013
- Desiccant-based air conditioning system19US 8,943,844 B2Ducool Ltd. · 2015
- CO2 removal from gas using ionic liquid absorbents17US 7,527,775 B2Chevron U.S.A.Inc. · 2009
- Methods and systems for deacidizing gaseous mixtures14US 7,718,151 B12010