B01D 53/0476
Vacuum pressure swing adsorption
Official title: {Vacuum pressure swing adsorption}
B01D53/0476 (Vacuum pressure swing adsorption) appears on 628 US grants and 512 published applications in this corpus.
Search patents in B01D- Granted patents
- 628
- Published applications
- 512
- Assignees
- 269
- Inventors
- 1,270
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 9 | 0 |
| 1989 | 12 | 0 |
| 1990 | 13 | 0 |
| 1991 | 9 | 0 |
| 1992 | 15 | 0 |
| 1993 | 19 | 0 |
| 1994 | 6 | 0 |
| 1995 | 9 | 0 |
| 1996 | 15 | 0 |
| 1997 | 11 | 0 |
| 1998 | 12 | 0 |
| 1999 | 19 | 0 |
| 2000 | 15 | 0 |
| 2001 | 18 | 4 |
| 2002 | 22 | 16 |
| 2003 | 23 | 13 |
| 2004 | 7 | 2 |
| 2005 | 5 | 13 |
| 2006 | 6 | 15 |
| 2007 | 8 | 11 |
| 2008 | 6 | 13 |
| 2009 | 7 | 13 |
| 2010 | 15 | 20 |
| 2011 | 9 | 15 |
| 2012 | 14 | 16 |
| 2013 | 13 | 20 |
| 2014 | 12 | 17 |
| 2015 | 16 | 16 |
| 2016 | 18 | 26 |
| 2017 | 20 | 17 |
| 2018 | 13 | 27 |
| 2019 | 24 | 21 |
| 2020 | 30 | 26 |
| 2021 | 20 | 34 |
| 2022 | 22 | 27 |
| 2023 | 28 | 32 |
| 2024 | 24 | 40 |
| 2025 | 26 | 28 |
| 2026 | 12 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for direct air capture of water and CO26 Oct 2026US 12,752,234 B2Battelle Memorial Institute
- Pressure swing adsorption apparatus for high purity hydrogen purification from ammonia decomposition and hydrogen purification method using the same4 Aug 2026US 12,697,581 B2Korea Institute of Energy Research
- Method for the capture of carbon dioxide using oxyfluoride physisorbents4 Aug 2026US 12,698,303 B2Research Triangle Institute
- Desulfurization of carbon dioxide-containing gases14 Apr 2026US 12,599,868 B2Air Products and Chemicals, Inc.
- Mechanical ventilator with non-invasive option31 Mar 2026US 12,589,213 B2Goldman Sephoric LLC
- Gas separation method, method for producing purified gas, and gas separation apparatus8 Oct 2026US 2026/0306996 A1Asahi Kasei Kabushiki Kaisha
- Dehydration device and assembly, and method for obtaining such an assembly27 Aug 2026US 2026/0251392 A1Lgd
- Built Environment Air Processing Systems and Methods20 Aug 2026US 2026/0241326 A1Carbonquest, Inc.
- Co2 adsorption system and method for co2 adsorption using humidity stable polystyrene-divinylbenzene amine functionalized polymeric adsorbents30 Jul 2026US 2026/0216633 A1Climeworks AG
- Facility for recovering co2 contained in a feed gas flow30 Jul 2026US 2026/0216646 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
Most cited
By later US patents
- Portable oxygen concentration system and method of using the same310US 6,651,658 B1SeQual Technologies, Inc. · 2003
- Portable oxygen concentration system and method of using the same223US 6,691,702 B2SeQual Technologies, Inc. · 2004
- High frequency pressure swing adsorption186US 6,176,897 B1Questor Industries Inc. · 2001
- Portable oxygen concentration system and method of using the same182US 6,629,525 B2SeQual Technologies, Inc. · 2003
- Rotary pressure swing adsorption apparatus181US 6,406,523 B1QuestAir Technologies Inc. · 2002