F25J 3/04806
High purity argon purification
Official title: {High purity argon purification}
F25J3/04806 (High purity argon purification) appears on 7 US grants and 7 published applications in this corpus.
Search patents in F25J- Granted patents
- 7
- Published applications
- 7
- Assignees
- 4
- Inventors
- 27
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
| 2017 | 2 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air separation apparatus7 Apr 2026US 12,595,961 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method for starting up an argon separation column of an apparatus for air separation by cryogenic distillation and unit for implementing the method27 May 2025US 12,313,336 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method for argon production via cold pressure swing adsorption18 Jul 2017US 9,708,188 B1Air Products and Chemicals, Inc.
- System and method for production of crude argon by cryogenic rectification of air21 Mar 2017US 9,599,396 B2Praxair Technology, Inc.
- System and method for production of argon by cryogenic rectification of air22 Mar 2016US 9,291,389 B2Praxair Technology, Inc.
- Method for cryogenic separation of air, and air separation plant16 Jul 2026US 2026/0202125 A1Linde Aktiengesellschaft
- Method for the cryogenic separation of air, and air separation plant13 Feb 2025US 2025/0052493 A1
- Air separation apparatus7 Sep 2023US 2023/0280093 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method for starting up an argon separation column of an apparatus for air separation by cryogenic distillation and unit for implementing the method7 Oct 2021US 2021/0310730 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Air fractionation plant, operating method and control facility2 Feb 2017US 2017/0030635 A1
Most cited
By later US patents
- Process and apparatus for recovery of pure argon15US 5,590,544 ALinde Aktiengesellschaft · 1997
- System and method for production of argon by cryogenic rectification of air6US 9,291,389 B2Praxair Technology, Inc. · 2016
- Method and installation for air distillation with production of argon5US 6,269,659 B1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude · 2001
- Method for argon production via cold pressure swing adsorption3US 9,708,188 B1Air Products and Chemicals, Inc. · 2017