B01D 53/502
Characterised by a specific solution or suspension
Official title: {characterised by a specific solution or suspension}
B01D53/502 (Characterised by a specific solution or suspension) appears on 237 US grants and 199 published applications in this corpus.
Search patents in B01D- Granted patents
- 237
- Published applications
- 199
- Assignees
- 175
- Inventors
- 617
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 10 | 0 |
| 1998 | 7 | 0 |
| 1999 | 3 | 0 |
| 2000 | 6 | 0 |
| 2001 | 7 | 0 |
| 2002 | 0 | 3 |
| 2003 | 4 | 4 |
| 2004 | 3 | 2 |
| 2005 | 0 | 1 |
| 2006 | 0 | 4 |
| 2007 | 0 | 2 |
| 2008 | 2 | 2 |
| 2009 | 1 | 0 |
| 2010 | 1 | 7 |
| 2011 | 4 | 5 |
| 2012 | 1 | 7 |
| 2013 | 6 | 6 |
| 2014 | 10 | 12 |
| 2015 | 4 | 8 |
| 2016 | 10 | 16 |
| 2017 | 8 | 17 |
| 2018 | 17 | 17 |
| 2019 | 24 | 16 |
| 2020 | 17 | 20 |
| 2021 | 10 | 13 |
| 2022 | 23 | 16 |
| 2023 | 11 | 7 |
| 2024 | 5 | 6 |
| 2025 | 4 | 4 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for capturing carbon dioxide and nitrogen oxides in flue gas and conversion thereof to carbon source and nitrogen source needed for algae growth31 Mar 2026US 12,589,355 B2
- Desulfurization and sulfur recovery method for sulfur dioxide flue gas31 Mar 2026US 12,589,356 B2TongLing Nonferrous Metals Group Holdings Co. Ltd.
- Method for simultaneously removing high-load sulfur dioxide and nitrogen oxide in waste gas10 Mar 2026US 12,569,807 B2Nanjing University
- Treatment of acid gases using molten alkali metal borates, and associated methods of separation24 Feb 2026US 12,558,651 B2Massachusetts Institute of Technology
- Desulfurization and denitrification agent and application thereof17 Feb 2026US 12,551,843 B1China shi da Education Development Co., Ltd
- Advanced membrane oxidation process and system for the treatment of industrial gas emissions and odors23 Jul 2026US 2026/0208099 A1
- Method for electrocatalytic synergistic treatment of industrial sulfur-containing flue gas and conversion of PET waste plastics into hydroxymethanesulfonate25 Jun 2026US 2026/0176775 A1Beijing University of Technology
- Methods and systems for collaborative prediction and intelligent control of multiple pollutants in waste incineration flue gas9 Apr 2026US 2026/0097360 A1Zhejiang University
- Method for producing carbon dioxide absorbent and desulfurization catalyst2 Apr 2026US 2026/0091379 A1
- System and method for treating coal-fired flue gas22 May 2025US 2025/0161864 A1Huaneng Clean Energy Research Institute
Most cited
By later US patents
- System and method for sequestration and separation of mercury in combustion exhaust gas aqueous scrubber systems182US 7,722,843 B12010
- Methods for removing air pollutants from combustion flue gas143US 5,670,122 AEnergy and Environmental Research Corporation · 1997
- Process for purifying exhaust gas using modified calcium hydroxide80US 5,618,508 AFTU GmbH Technische Entwicklung und Forschung Im Umweltschutz · 1997
- Method for removing mercury and sulfur dioxide from gases71US 6,284,208 B12001
- Process for removal of NO.sub.x and SO.sub.x oxides from waste gases with chloric acid60US 5,328,673 AOlin Corporation · 1994