B01D 2259/40011
Methods relating to the process cycle in pressure or temperature swing adsorption
B01D2259/40011 (Methods relating to the process cycle in pressure or temperature swing adsorption) appears on 1,128 US grants and 735 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,128
- Published applications
- 735
- Assignees
- 429
- Inventors
- 1,967
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 8 | 0 |
| 1978 | 7 | 0 |
| 1979 | 4 | 0 |
| 1980 | 8 | 0 |
| 1981 | 16 | 0 |
| 1982 | 10 | 0 |
| 1983 | 16 | 0 |
| 1984 | 18 | 0 |
| 1985 | 19 | 0 |
| 1986 | 14 | 0 |
| 1987 | 18 | 0 |
| 1988 | 28 | 0 |
| 1989 | 18 | 0 |
| 1990 | 20 | 0 |
| 1991 | 18 | 0 |
| 1992 | 27 | 0 |
| 1993 | 25 | 0 |
| 1994 | 15 | 0 |
| 1995 | 26 | 0 |
| 1996 | 28 | 0 |
| 1997 | 22 | 0 |
| 1998 | 33 | 0 |
| 1999 | 40 | 0 |
| 2000 | 39 | 0 |
| 2001 | 33 | 5 |
| 2002 | 29 | 24 |
| 2003 | 32 | 28 |
| 2004 | 22 | 27 |
| 2005 | 20 | 44 |
| 2006 | 16 | 38 |
| 2007 | 25 | 22 |
| 2008 | 23 | 25 |
| 2009 | 22 | 27 |
| 2010 | 30 | 25 |
| 2011 | 17 | 21 |
| 2012 | 18 | 31 |
| 2013 | 27 | 21 |
| 2014 | 24 | 22 |
| 2015 | 23 | 28 |
| 2016 | 25 | 28 |
| 2017 | 28 | 43 |
| 2018 | 32 | 34 |
| 2019 | 35 | 37 |
| 2020 | 34 | 32 |
| 2021 | 31 | 30 |
| 2022 | 26 | 33 |
| 2023 | 30 | 33 |
| 2024 | 12 | 31 |
| 2025 | 13 | 23 |
| 2026 | 19 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 2259/40043PurgingIndexing code670
- B01D 2259/40058Number of sequence steps, including sub-steps, per cycleIndexing code544
- B01D 2259/40077Direction of flowIndexing code414
- B01D 2259/40028DepressurizationIndexing code298
- B01D 2259/40035EqualizationIndexing code245
- B01D 2259/40013PressurizationIndexing code218
- B01D 2259/4002ProductionIndexing code102
Recent patents
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- Adsorbent material, adsorption system, and adsorption process25 Aug 2026US 12,714,985 B2Air Products and Chemicals, Inc.
- Processes and systems for upgrading a hydrocarbon25 Aug 2026US 12,716,038 B2ExxonMobil Chemical Patents Inc.
- Atmospheric steam desorption for direct air capture18 Aug 2026US 12,708,870 B2Climeworks AG
- Multi-stage direct capture of CO2 from air11 Aug 2026US 12,702,947 B2ExxonMobil Technology and Engineering Company
- Method for treating a fluid, fluid discharge device for a fluid and associated system8 Oct 2026US 2026/0306992 A1
- Gas separation method, method for producing purified gas, and gas separation apparatus8 Oct 2026US 2026/0306996 A1Asahi Kasei Kabushiki Kaisha
- Dac apparatus1 Oct 2026US 2026/0295504 A1Honda Motor Co., Ltd.
- Atmospheric steam desorption for direct air capture1 Oct 2026US 2026/0295505 A1Climeworks AG
- Adsorption dryer24 Sep 2026US 2026/0284575 A1
Most cited
By later US patents
- Portable oxygen concentration system and method of using the same223US 6,691,702 B2SeQual Technologies, Inc. · 2004
- Rapid cycle pressure swing adsorption oxygen concentration method and apparatus193US 5,827,358 AImpact MST, Incorporation · 1998
- High frequency pressure swing adsorption186US 6,176,897 B1Questor Industries Inc. · 2001
- Removal of water and carbon dioxide from atmospheric air159US 4,711,645 AAir Products and Chemicals, Inc. · 1987
- Carbon dioxide pressure swing adsorption process using modified alumina adsorbents155US 5,917,136 AAir Products and Chemicals, Inc. · 1999