B01D 53/1406
Multiple stage absorption
Official title: {Multiple stage absorption}
B01D53/1406 (Multiple stage absorption) appears on 370 US grants and 444 published applications in this corpus.
Search patents in B01D- Granted patents
- 370
- Published applications
- 444
- Assignees
- 264
- Inventors
- 1,000
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 6 | 0 |
| 1984 | 1 | 0 |
| 1985 | 6 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 6 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 2 |
| 2005 | 0 | 5 |
| 2006 | 3 | 6 |
| 2007 | 3 | 2 |
| 2008 | 2 | 1 |
| 2009 | 4 | 6 |
| 2010 | 2 | 8 |
| 2011 | 5 | 18 |
| 2012 | 8 | 21 |
| 2013 | 16 | 23 |
| 2014 | 9 | 24 |
| 2015 | 17 | 31 |
| 2016 | 18 | 26 |
| 2017 | 24 | 23 |
| 2018 | 23 | 20 |
| 2019 | 24 | 30 |
| 2020 | 19 | 30 |
| 2021 | 23 | 33 |
| 2022 | 24 | 26 |
| 2023 | 20 | 39 |
| 2024 | 30 | 20 |
| 2025 | 17 | 28 |
| 2026 | 16 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Once through CO2 absorber with integrated ammonia slip mitigation and intercooling1 Sep 2026US 12,722,115 B2Nuovo Pignone Tecnologie Srl
- Multi-stage ammonia-based decarbonization11 Aug 2026US 12,703,638 B2Jiangnan Environmental Protection Group Inc.
- Latent heat and condensation exchanger11 Aug 2026US 12,704,076 B2Sustainable Energy Solutions, LLC
- Hybrid carbon dioxide removal systems4 Aug 2026US 12,697,582 B2AirMyne, Inc.
- Plant and method for carrying out an endothermic chemical process and for separating carbon dioxide from flue gas produced in the process28 Jul 2026US 12,691,411 B2L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes
- High-efficiency carbonation reaction system and method for capturing carbon dioxide from flue gas continuously1 Oct 2026US 2026/0295508 A1National Atomic Research Institute
- Generation and utilization of ammoniated water in gasification1 Oct 2026US 2026/0297445 A1SunGas Renewables, Inc.
- Acid gas removal apparatus and acid gas removal method24 Sep 2026US 2026/0284579 A1Kabushiki Kaisha Toshiba
- Carbon dioxide absorbent using aqueous potassium carbonate solution, process of capturing carbon dioxide and system of capturing carbon dioxide using the same10 Sep 2026US 2026/0263991 A1Gwangju Institute of Science and Technology
- Apparatus, systems, and methods for enhanced capture of carbon dioxide from ambient air using liquid solvent3 Sep 2026US 2026/0257171 A1Capture6 Corp
Most cited
By later US patents
- Methods and configurations for acid gas enrichment156US 7,635,408 B2Fluor Technologies Corporation · 2009
- Method for recovery of CO2 from gas streams133US 7,056,482 B2Cansolv Technologies Inc. · 2006
- Apparatus and process for removing carbon dioxide from combustion exhaust gas94US 5,318,758 AMitsubishi Jukogyo Kabushiki Kaisha · 1994
- Production of purified synthesis gas H.sub.2 -rich gas, and by-product CO.sub.2 -rich gas87US 4,052,176 ATexaco Inc. · 1977
- Cascade acid gas removal process64US 5,137,550 AAir Products and Chemicals, Inc. · 1992