B01D 2252/20415
Tri- or polyamines
B01D2252/20415 (Tri- or polyamines) appears on 79 US grants and 127 published applications in this corpus.
Search patents in B01D- Granted patents
- 79
- Published applications
- 127
- Assignees
- 87
- Inventors
- 318
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 3 |
| 2011 | 1 | 8 |
| 2012 | 2 | 10 |
| 2013 | 7 | 8 |
| 2014 | 4 | 6 |
| 2015 | 8 | 6 |
| 2016 | 6 | 13 |
| 2017 | 5 | 4 |
| 2018 | 9 | 11 |
| 2019 | 1 | 6 |
| 2020 | 9 | 9 |
| 2021 | 4 | 8 |
| 2022 | 6 | 7 |
| 2023 | 6 | 8 |
| 2024 | 7 | 5 |
| 2025 | 3 | 9 |
| 2026 | 0 | 5 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Compositions and methods for carbon dioxide capture4 Nov 2025US 12,458,920 B2The Board of Trustees of the University of Illinois
- Gas treatment method, and gas treatment device12 Aug 2025US 12,383,861 B2Kobe Steel, Ltd.
- Method for removing acid compounds from a gaseous effluent using a tertiary amine-based absorbent solution20 May 2025US 12,305,136 B2Ifp Energies Nouvelles
- System and process of capturing carbon dioxide from flue gases12 Nov 2024US 12,138,588 B2Carbon Clean Solutions Limited
- Method and a system for the removal of carbon dioxide from solvents5 Nov 2024US 12,134,067 B2Carbon Clean Solutions Limited
- Carbon dioxide absorbent, method for recovering carbon dioxide, and apparatus for separating and recovering carbon dioxide8 Oct 2026US 2026/0307045 A1Mitsubishi Gas Chemical Company, Inc.
- Absorption liquid for capturing carbon dioxide and use thereof, and method for capturing carbon dioxide1 Oct 2026US 2026/0295511 A1China Petroleum & Chemical Corporation
- Alkoxylated polyalkyleneimines, preparation and use6 Aug 2026US 2026/0226235 A1BASF SE
- Low-Energy CO2 Capture and Separation14 May 2026US 2026/0131278 A1NRGTEK, Inc.
- Acidic gas-absorbing liquid and acidic gas reduction method30 Apr 2026US 2026/0115649 A1AGC Inc.
Most cited
By later US patents
- Carbon dioxide capture and conversion to organic products43US 8,658,016 B2Liquid Light, Inc. · 2014
- Carbon dioxide sorbents39US 8,470,074 B2ExxonMobil Research and Engineering Company · 2013
- Carbon dioxide sorbents28US 8,598,071 B1ExxonMobil Research and Engineering Company · 2013
- Process for the recovery of carbon dioxide from a gas stream25US 7,601,315 B2Cansolv Technologies Inc. · 2009
- Carbon dioxide sorbents20US 8,598,070 B1ExxonMobil Research and Engineering Company · 2013