F25J 2240/22
The fluid being oxygen enriched compared to air
Official title: the fluid being oxygen enriched compared to air, e.g. "crude oxygen"
F25J2240/22 (The fluid being oxygen enriched compared to air) appears on 7 US grants and 5 published applications in this corpus.
Search patents in F25J- Granted patents
- 7
- Published applications
- 5
- Assignees
- 4
- Inventors
- 21
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
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| 1991 | 0 | 0 |
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| 1993 | 0 | 0 |
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| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 2 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for separating air by cryogenic distillation26 May 2026US 12,638,239 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Nitrogen generating device and nitrogen generating method31 Mar 2026US 12,590,758 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Cryogenic rectification method28 May 2013US 8,448,463 B2Praxair Technology, Inc.
- Nitrogen generation process28 Oct 2003US 6,637,240 B1Air Products and Chemicals, Inc.
- Nitrogen generation process3 Dec 2002US 6,487,877 B1Air Products and Chemicals, Inc.
- Method for separating air by cryogenic distillation8 Feb 2024US 2024/0044578 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Apparatus and method for separating air21 Dec 2023US 2023/0408193 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Nitrogen generating device and nitrogen generating method26 Oct 2023US 2023/0341181 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Air separation unit and systems incorporating the same3 Jan 2013US 2013/0000352 A1General Electric Company
- Cryogenic rectification method30 Sep 2010US 2010/0242538 A1Praxair Technology, Inc.
Most cited
By later US patents
- Air separation with medium pressure enrichment30US 4,433,989 A1984
- Nitrogen generation process5US 6,487,877 B1Air Products and Chemicals, Inc. · 2002
- Nitrogen generation process2US 6,637,240 B1Air Products and Chemicals, Inc. · 2003
- Pump for a cryogenic liquid and pump unit and distillation column which are equipped with such a pump1US 6,250,896 B1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude · 2001