B01D 2259/40045
With two sub-steps
Official title: with two sub-steps
B01D2259/40045 (With two sub-steps) appears on 60 US grants and 33 published applications in this corpus.
Search patents in B01D- Granted patents
- 60
- Published applications
- 33
- Assignees
- 31
- Inventors
- 143
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 6 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 2 |
| 2003 | 3 | 2 |
| 2004 | 0 | 0 |
| 2005 | 0 | 3 |
| 2006 | 1 | 2 |
| 2007 | 1 | 1 |
| 2008 | 2 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 2 |
| 2013 | 1 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 3 |
| 2018 | 3 | 2 |
| 2019 | 2 | 3 |
| 2020 | 3 | 4 |
| 2021 | 3 | 4 |
| 2022 | 3 | 0 |
| 2023 | 1 | 2 |
| 2024 | 0 | 1 |
| 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
- Intensified pressure swing adsorption system and process cycles21 Feb 2023US 11,583,798 B2Praxair Technology, Inc.
- Process for removing oxygen from a hydrogen stream20 Sep 2022US 11,447,390 B2Uop LLC
- Temperature-swing adsoroption process31 May 2022US 11,344,838 B2Casale SA
- Optimization of a pressure swing adsorption process19 Dec 2024US 2024/0416272 A1Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
- Swing adsorption processes and systems for controlling product composition9 Nov 2023US 2023/0356140 A1ExxonMobil Technology and Engineering Company
- 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
- Process for removing oxygen from a hydrogen stream7 Oct 2021US 2021/0309517 A1Uop LLC
- Intensified pressure swing adsorption system and process cycles24 Jun 2021US 2021/0187432 A1Praxair Technology, Inc.
Most cited
By later US patents
- Weight-optimized portable oxygen concentrator104US 7,279,029 B2Air Products and Chemicals, Inc. · 2007
- Process for the purification of natural gas100US 5,174,796 AUop LLC · 1992
- Separation of gas mixtures including hydrogen88US 5,234,472 AThe BOC Group, Inc. · 1993
- Method of purifying a natural gas by mercaptan adsorption64US 7,449,049 B2Institute Francais du Petrole · 2008
- Pressure swing adsorption process for gas separation57US 4,810,265 AUnion Carbide Corporation · 1989