B01D 2252/20478
Alkanolamines
B01D2252/20478 (Alkanolamines) appears on 488 US grants and 730 published applications in this corpus.
Search patents in B01D- Granted patents
- 488
- Published applications
- 730
- Assignees
- 287
- Inventors
- 1,425
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 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 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 2 |
| 2009 | 2 | 2 |
| 2010 | 2 | 2 |
| 2011 | 0 | 19 |
| 2012 | 2 | 46 |
| 2013 | 18 | 42 |
| 2014 | 33 | 60 |
| 2015 | 28 | 61 |
| 2016 | 39 | 55 |
| 2017 | 39 | 55 |
| 2018 | 54 | 52 |
| 2019 | 54 | 52 |
| 2020 | 37 | 44 |
| 2021 | 43 | 47 |
| 2022 | 36 | 29 |
| 2023 | 31 | 43 |
| 2024 | 32 | 43 |
| 2025 | 26 | 42 |
| 2026 | 10 | 33 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Solvent systems for carbon dioxide capture and methods of making and using said systems14 Jul 2026US 12,678,729 B2Schlumberger Technology Corporation
- Composition for carbon dioxide separation and method for separating carbon dioxide9 Jun 2026US 12,649,145 B2Tosoh Corporation
- Compositions and methods for scavenging hydrogen sulfide26 May 2026US 12,637,628 B2Foremark Performance Chemicals
- Compositions and methods for scavenging hydrogen sulfide26 May 2026US 12,637,629 B2Foremark Performance Chemicals
- System for offshore carbon dioxide capture5 May 2026US 12,616,929 B2Equinor Energy AS
- Absorbent for Capturing Carbon Dioxide8 Oct 2026US 2026/0307000 A1Panasia Co., Ltd.
- Absorption liquid for capturing carbon dioxide and use thereof, and method for capturing carbon dioxide1 Oct 2026US 2026/0295511 A1China Petroleum & Chemical Corporation
- A method and system for the removal of carbon dioxide from carbon capture solvents using heat from a gas24 Sep 2026US 2026/0284577 A1
- Acid gas removal apparatus and acid gas removal method24 Sep 2026US 2026/0284579 A1Kabushiki Kaisha Toshiba
- Acid gas removal apparatus and acid gas removal method24 Sep 2026US 2026/0284580 A1Kabushiki Kaisha Toshiba
Most cited
By later US patents
- Selective-permeation gas-separation process and apparatus62US 4,750,918 AThe Trustees of the Stevens Institute of Technology · 1988
- Rapid temperature swing adsorption contactors for gas separation56US 8,673,059 B2ExxonMobil Research and Engineering Company · 2014
- Temperature swing adsorption process for the separation of target species from a gas mixture52US 8,784,533 B2ExxonMobil Research and Engineering Company · 2014
- Pressure-temperature swing adsorption process51US 8,784,534 B2ExxonMobil Research and Engineering Company · 2014
- Pressure-temperature swing adsorption process for the separation of heavy hydrocarbons from natural gas streams50US 8,784,535 B2ExxonMobil Research and Engineering Company · 2014