B01D 2252/20489
With two or more hydroxyl groups
Official title: with two or more hydroxyl groups
B01D2252/20489 (With two or more hydroxyl groups) appears on 239 US grants and 348 published applications in this corpus.
Search patents in B01D- Granted patents
- 239
- Published applications
- 348
- Assignees
- 168
- Inventors
- 744
- 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 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 10 |
| 2012 | 1 | 24 |
| 2013 | 9 | 17 |
| 2014 | 19 | 32 |
| 2015 | 10 | 23 |
| 2016 | 18 | 29 |
| 2017 | 16 | 29 |
| 2018 | 24 | 29 |
| 2019 | 29 | 25 |
| 2020 | 19 | 24 |
| 2021 | 27 | 26 |
| 2022 | 18 | 11 |
| 2023 | 13 | 19 |
| 2024 | 14 | 21 |
| 2025 | 14 | 14 |
| 2026 | 5 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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
- Systems and methods for electrochemical generation of syngas and other useful chemicals7 Apr 2026US 12,595,572 B2The University of British Columbia
- Amine solvent-based carbon capture compositions10 Feb 2026US 12,544,708 B2International Business Machines Corporation
- Carbon dioxide capturing system and operation method thereof10 Feb 2026US 12,544,713 B2Kabushiki Kaisha Toshiba
- 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
- Acid gas removal apparatus and acid gas removal method24 Sep 2026US 2026/0284579 A1Kabushiki Kaisha Toshiba
- Composition for carbon dioxide separation and method for separating carbon dioxide17 Sep 2026US 2026/0273505 A1Tosoh Corporation
- Compositions, methods, and systems for carbon capture10 Sep 2026US 2026/0263992 A1Board of Regents, The University of Texas System
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