F25J 2250/58
One fluid being argon or crude argon
F25J2250/58 (One fluid being argon or crude argon) appears on 32 US grants and 14 published applications in this corpus.
Search patents in F25J- Granted patents
- 32
- Published applications
- 14
- Assignees
- 7
- Inventors
- 52
- Latest grant
- 9 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 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 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 2 |
| 2019 | 0 | 1 |
| 2020 | 2 | 2 |
| 2021 | 2 | 2 |
| 2022 | 1 | 3 |
| 2023 | 0 | 0 |
| 2024 | 2 | 2 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Apparatus and process for liquefying gases9 Dec 2025US 12,492,864 B1
- Process and apparatus for improved recovery of argon12 Aug 2025US 12,385,692 B2Air Products and Chemicals, Inc.
- Method and apparatus for air separation by cryogenic distillation2 Jul 2024US 12,025,372 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Air separation unit and method for production of high purity nitrogen product using a distillation column system with an intermediate pressure kettle column16 Apr 2024US 11,959,701 B2Praxair Technology, Inc.
- System and method for flexible recovery of argon from a cryogenic air separation unit1 Mar 2022US 11,262,125 B2Praxair Technology, Inc.
- Process and Apparatus for Improved Recovery of Argon18 Apr 2024US 2024/0125550 A1Air Products and Chemicals, Inc.
- Air separation unit and method for production of high purity nitrogen product using a distillation column system with an intermediate pressure kettle column1 Feb 2024US 2024/0035742 A1Praxair Technology, Inc.
- Method for flexible recovery of argon from a cryogenic air separation unit12 May 2022US 2022/0146195 A1
- System and method for flexible recovery of argon from a cryogenic air separation unit12 May 2022US 2022/0146196 A1
- Process and apparatus for supplying a backup gas under pressure3 Mar 2022US 2022/0065528 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
Most cited
By later US patents
- Cryogenic air separation with cold argon recycle38US 4,533,375 A1985
- Cryogenic hybrid system for producing high purity argon37US 5,730,003 APraxair Technology, Inc. · 1998
- Method of purifying argon through cryogenic adsorption29US 5,159,816 AAir Products and Chemicals, Inc. · 1992
- Argon purification28US 5,019,145 ALinde Aktiengesellschaft · 1991
- Cryogenic air separation system for producing gaseous oxygen28US 5,265,429 APraxair Technology, Inc. · 1993