B01D 2259/40032
With three sub-steps
Official title: with three sub-steps
B01D2259/40032 (With three sub-steps) appears on 89 US grants and 32 published applications in this corpus.
Search patents in B01D- Granted patents
- 89
- Published applications
- 32
- Assignees
- 32
- Inventors
- 169
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 8 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 2 |
| 2003 | 3 | 2 |
| 2004 | 1 | 2 |
| 2005 | 2 | 5 |
| 2006 | 1 | 2 |
| 2007 | 4 | 3 |
| 2008 | 1 | 2 |
| 2009 | 1 | 2 |
| 2010 | 4 | 0 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 1 | 2 |
| 2014 | 1 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 1 |
| 2021 | 2 | 1 |
| 2022 | 0 | 1 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 2 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and system for upgrading biogas using PSA21 Apr 2026US 12,605,672 B2Iogen Corporation
- Method for regulating a unit for separating a gas stream15 Jul 2025US 12,357,939 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Pressure swing adsorption process for producing hydrogen and carbon dioxide27 May 2025US 12,312,242 B2Casale SA
- Method for producing oxygen via O2 VSA, minimizing valve openings and closings21 Nov 2023US 11,819,796 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Gas separation and recovery method and facility10 Aug 2021US 11,083,990 B2Jfe Steel Corporation
- Method for treating a fluid, fluid discharge device for a fluid and associated system8 Oct 2026US 2026/0306992 A1
- Method and system for upgrading biogas using psa24 Apr 2025US 2025/0128201 A1Iogen Corporation
- Method and system for upgrading biogas using psa2 Jan 2025US 2025/0001351 A1Iogen Corporation
- Method for regulating a unit for separating a gas stream25 May 2023US 2023/0158444 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- A pressure swing adsorption process for producing hydrogen and carbon dioxide16 Jun 2022US 2022/0185666 A1Casale SA
Most cited
By later US patents
- Methods and apparatuses for gas separation by pressure swing adsorption with partial gas product feed to fuel cell power source139US 6,866,950 B2QuestAir Technologies Inc. · 2005
- Process for the separation/recovery of gases114US 6,179,900 B2GKSS-Forschungszentrum Geesthacht GmbH · 2001
- Layered manifold pressure swing adsorption device and method106US 6,565,635 B2QuestAir Technologies Inc. · 2003
- Weight-optimized portable oxygen concentrator104US 7,279,029 B2Air Products and Chemicals, Inc. · 2007
- PSA multicomponent separation utilizing tank equalization101US 4,816,039 AThe BOC Group, Inc. · 1989