F25J 2245/58
The recycled stream being argon or crude argon
Official title: the recycled stream being argon or crude argon
F25J2245/58 (The recycled stream being argon or crude argon) appears on 70 US grants and 58 published applications in this corpus.
Search patents in F25J- Granted patents
- 70
- Published applications
- 58
- Assignees
- 15
- Inventors
- 120
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 1 |
| 2002 | 3 | 2 |
| 2003 | 0 | 1 |
| 2004 | 2 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 1 | 1 |
| 2014 | 2 | 1 |
| 2015 | 4 | 4 |
| 2016 | 0 | 1 |
| 2017 | 2 | 8 |
| 2018 | 7 | 7 |
| 2019 | 1 | 1 |
| 2020 | 4 | 6 |
| 2021 | 2 | 7 |
| 2022 | 2 | 4 |
| 2023 | 6 | 2 |
| 2024 | 2 | 4 |
| 2025 | 3 | 2 |
| 2026 | 1 | 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
- Apparatus and process for liquefying gases9 Dec 2025US 12,492,864 B1
- Air separation unit and method for cryogenic separation of air using a distillation column system including an intermediate pressure kettle column8 Jul 2025US 12,352,496 B2Praxair Technology, Inc.
- 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 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
- Oxygen liquefaction process14 Aug 2025US 2025/0257940 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Cryogenic air rectification system, control unit, air separation unit and method of cryogenically separating air8 May 2025US 2025/0146746 A1Linde Aktiengesellschaft
- Method and plant for providing a pressurized oxygen-rich, gaseous air product21 Nov 2024US 2024/0384928 A1Linde Aktiengesellschaft
- 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
- Air separation unit and method for cryogenic separation of air using a distillation column system including an intermediate pressure kettle column1 Feb 2024US 2024/0035740 A1Praxair Technology, Inc.
Most cited
By later US patents
- Process for distillation of multicomponent fluid and production of an argon-enriched stream from a cryogenic air separation process57US 6,240,744 B1Air Products and Chemicals, Inc. · 2001
- Cryogenic hybrid system for producing high purity argon37US 5,730,003 APraxair Technology, Inc. · 1998
- Production of ultra-high purity oxygen from cryogenic air separation plants31US 5,049,173 AAir Products and Chemicals, Inc. · 1991
- Process for recovering argon30US 4,575,388 ANihon Sanso Kabushiki Kaisha · 1986
- Thermal cycle for the compression of a fluid by the expansion of another fluid25US 4,022,030 AL Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude · 1977