B01D 2259/40022
With two sub-steps
Official title: with two sub-steps
B01D2259/40022 (With two sub-steps) appears on 70 US grants and 39 published applications in this corpus.
Search patents in B01D- Granted patents
- 70
- Published applications
- 39
- Assignees
- 39
- Inventors
- 167
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 4 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 3 |
| 2003 | 2 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 5 |
| 2006 | 2 | 1 |
| 2007 | 2 | 5 |
| 2008 | 2 | 3 |
| 2009 | 1 | 0 |
| 2010 | 4 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 7 |
| 2013 | 0 | 0 |
| 2014 | 6 | 1 |
| 2015 | 1 | 1 |
| 2016 | 1 | 1 |
| 2017 | 1 | 2 |
| 2018 | 1 | 0 |
| 2019 | 2 | 1 |
| 2020 | 0 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 1 |
| 2023 | 3 | 5 |
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Swing adsorption processes and systems for controlling product composition20 Jan 2026US 12,528,043 B2ExxonMobil Technology and Engineering Company
- 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
- Portable pressure swing adsorption method and system for fuel gas conditioning16 Jan 2024US 11,872,518 B2Coldstream Energy IP, LLC
- System and method for pressure swing adsorption26 Dec 2023US 11,850,545 B2Hyundai Motor Company
- 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
- Swing adsorption processes and systems for controlling product composition9 Nov 2023US 2023/0356140 A1ExxonMobil Technology and Engineering Company
- Ammonia cracking process and apparatus for improved hydrogen recovery8 Jun 2023US 2023/0174375 A1Uop LLC
- 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
- Portable pressure swing adsorption method and system for fuel gas conditioning30 Mar 2023US 2023/0101201 A1Coldstream Energy IP, LLC
- Portable pressure swing adsorption method and system for fuel gas conditioning16 Mar 2023US 2023/0082278 A1Coldstream Energy IP, LLC
Most cited
By later US patents
- Portable gas fractionalization system107US 7,066,985 B2Inogen, Inc. · 2006
- 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 process and system91US 6,007,606 APraxair Technology, Inc. · 1999
- Portable gas fractionalization system77US 7,135,059 B2Inogen, Inc. · 2006