B01D 2252/20421
Primary amines
B01D2252/20421 (Primary amines) appears on 174 US grants and 274 published applications in this corpus.
Search patents in B01D- Granted patents
- 174
- Published applications
- 274
- Assignees
- 134
- Inventors
- 587
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2008 | 0 | 2 |
| 2009 | 0 | 1 |
| 2010 | 2 | 8 |
| 2011 | 0 | 8 |
| 2012 | 5 | 24 |
| 2013 | 16 | 15 |
| 2014 | 6 | 13 |
| 2015 | 14 | 19 |
| 2016 | 11 | 24 |
| 2017 | 20 | 26 |
| 2018 | 19 | 21 |
| 2019 | 14 | 14 |
| 2020 | 19 | 11 |
| 2021 | 10 | 11 |
| 2022 | 8 | 15 |
| 2023 | 12 | 15 |
| 2024 | 8 | 20 |
| 2025 | 8 | 13 |
| 2026 | 2 | 14 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Porous liquid, self-replenishing porous liquid and methods of making and using the same24 Mar 2026US 12,582,939 B2ExxonMobil Technology and Engineering Company
- Low-cost and high-efficiency absorption-desorption decoupling method for contaminant-CO2 synergistic capture27 Jan 2026US 12,533,627 B2Jiaxing Research Institute, Zhejiang University
- Methods and compositions for carbon capture30 Dec 2025US 12,508,536 B2Entropy Inc.
- Compositions and methods for carbon dioxide capture4 Nov 2025US 12,458,920 B2The Board of Trustees of the University of Illinois
- Aqueous CO2 absorbent comprising 2-amino-2-methyl-1-propanol and 3-aminopropanol23 Sep 2025US 12,420,227 B2Aker Carbon Capture Norway AS
- Absorbent for Capturing Carbon Dioxide8 Oct 2026US 2026/0307000 A1Panasia Co., Ltd.
- Methods for carbon capture and metal recovery and related systems24 Sep 2026US 2026/0284595 A1Battelle Energy Alliance, LLC
- Compositions and methods for carbon dioxide capture and fluid sweetening10 Sep 2026US 2026/0263993 A1Solugen, Inc.
- 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.
- Carbon dioxide recovery system and operation method therefor6 Aug 2026US 2026/0225030 A1Mitsubishi Heavy Industries, Ltd.
Most cited
By later US patents
- Integrated method of driving a CO2 compressor of a CO2-capture system using waste heat from an internal combustion engine on board a mobile source47US 9,222,480 B2Saudi Arabian Oil Company · 2015
- Carbon dioxide sorbents39US 8,470,074 B2ExxonMobil Research and Engineering Company · 2013
- Application of amine-tethered solid sorbents to CO2 fixation from air34US 8,491,705 B22013
- Carbon dioxide sorbents28US 8,598,071 B1ExxonMobil Research and Engineering Company · 2013
- CO2 absorption solution23US 7,740,689 B2CO2 Solution Inc. · 2010