B01D 2259/406
Using more than four beds
Official title: using more than four beds
B01D2259/406 (Using more than four beds) appears on 291 US grants and 200 published applications in this corpus.
Search patents in B01D- Granted patents
- 291
- Published applications
- 200
- Assignees
- 118
- Inventors
- 509
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 7 | 0 |
| 1983 | 8 | 0 |
| 1984 | 5 | 0 |
| 1985 | 7 | 0 |
| 1986 | 6 | 0 |
| 1987 | 4 | 0 |
| 1988 | 14 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 8 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 3 |
| 2002 | 10 | 8 |
| 2003 | 4 | 6 |
| 2004 | 4 | 4 |
| 2005 | 5 | 10 |
| 2006 | 3 | 8 |
| 2007 | 5 | 8 |
| 2008 | 5 | 7 |
| 2009 | 4 | 8 |
| 2010 | 9 | 8 |
| 2011 | 4 | 6 |
| 2012 | 7 | 7 |
| 2013 | 7 | 7 |
| 2014 | 5 | 6 |
| 2015 | 6 | 6 |
| 2016 | 8 | 7 |
| 2017 | 4 | 10 |
| 2018 | 10 | 10 |
| 2019 | 11 | 16 |
| 2020 | 14 | 8 |
| 2021 | 8 | 15 |
| 2022 | 10 | 9 |
| 2023 | 10 | 7 |
| 2024 | 11 | 9 |
| 2025 | 4 | 6 |
| 2026 | 6 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 2259/4062Using six bedsIndexing code98
- B01D 2259/4061Using five bedsIndexing code69
- B01D 2259/4068Using more than ten bedsIndexing code62
- B01D 2259/4067Using ten bedsIndexing code39
- B01D 2259/4065Using eight bedsIndexing code31
- B01D 2259/4063Using seven bedsIndexing code24
- B01D 2259/4066Using nine bedsIndexing code16
Recent patents
- Adsorbent material, adsorption system, and adsorption process25 Aug 2026US 12,714,985 B2Air Products and Chemicals, Inc.
- Method for managing a fault in a pressure swing absorption gas treatment unit4 Aug 2026US 12,697,579 B2L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Claude Georges
- 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
- Evaporative fuel vapor emission control systems17 Mar 2026US 12,577,895 B2Ingevity South Carolina, LLC
- Structure with external support for particle adsorbent bed for adsorption gas separation process24 Feb 2026US 12,558,647 B2W. L. Gore & Associates, Inc.
- Adsorption process28 May 2026US 2026/0145117 A1Korea Institute of Energy Research
- Direct air capture device18 Dec 2025US 2025/0381511 A1Climeworks AG
- A system for capture of carbon dioxide27 Nov 2025US 2025/0360451 A1Shell USA, Inc.
- Dynamic adsorption and desorption system31 Jul 2025US 2025/0242293 A1Mosaic Materials, Inc.
- Process for the production of hydrogen from biomass12 Jun 2025US 2025/0188375 A1BHYO GmbH
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
- Rotary pressure swing adsorption apparatus181US 6,406,523 B1QuestAir Technologies Inc. · 2002
- Flow regulated pressure swing adsorption system153US 6,063,161 ASoFinoy Societte Financiere d'Innovation Inc. · 2000
- Process for purifying a gas by adsorption of the impurities on several active carbons147US 6,402,813 B2L 'Air Liquide-Societe 'Anonyme a 'Directoire et Conseil de Surveillance pour l 'Etude et L'Exploitation des Procedes Georges Claude · 2002