F25J 3/0285
Of argon
Official title: {of argon}
F25J3/0285 (Of argon) appears on 54 US grants and 39 published applications in this corpus.
Search patents in F25J- Granted patents
- 54
- Published applications
- 39
- Assignees
- 23
- Inventors
- 105
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 3 |
| 2003 | 0 | 0 |
| 2004 | 2 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 3 |
| 2013 | 1 | 1 |
| 2014 | 0 | 2 |
| 2015 | 1 | 1 |
| 2016 | 0 | 3 |
| 2017 | 0 | 3 |
| 2018 | 7 | 7 |
| 2019 | 5 | 2 |
| 2020 | 1 | 1 |
| 2021 | 2 | 2 |
| 2022 | 0 | 2 |
| 2023 | 0 | 1 |
| 2024 | 2 | 0 |
| 2025 | 1 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Waste argon separation system and method capable of reducing emission of cryogenic waste argon26 Aug 2025US 12,398,952 B2Shanghai Lifengas Co., Ltd
- Cryogenic air separation unit with argon condenser vapor recycle19 Mar 2024US 11,933,539 B2Praxair Technology, Inc.
- Argon and power production by integration with power plant27 Feb 2024US 11,913,718 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Process for argon and nitrogen production31 Aug 2021US 11,104,576 B2Casale SA
- System and method for rare gas recovery4 May 2021US 10,995,982 B2Praxair Technology, Inc.
- Process and apparatus for the production of ammonia synthesis gas16 Oct 2025US 2025/0321050 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Waste argon separation system and method capable of reducing emission of cryogenic waste argon20 Mar 2025US 2025/0093095 A1Shanghai Lifengas Co., Ltd
- Cryogenic air separation unit with argon condenser vapor recycle16 Feb 2023US 2023/0052938 A1Praxair Technology, Inc.
- Method and apparatus for producing product nitrogen gas and product argon13 Oct 2022US 2022/0325952 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Purification of carbon monoxide by cryogenic distillation8 Sep 2022US 2022/0282913 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
Most cited
By later US patents
- Integrated air separation process103US 6,282,901 B1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude · 2001
- Integrated air separation and power generation process95US 6,745,573 B2American Air Liquide, Inc. · 2004
- Argon recovery from argon-oxygen-decarburization process waste gases71US 5,125,934 AThe BOC Group, Inc. · 1992
- High efficiency nitrogen rejection unit52US 5,375,422 A1994
- Argon recovery from hydrogen depleted ammonia plant purge gas utilizing a combination of cryogenic and non-cryogenic separating means42US 4,687,498 AThe BOC Group, Inc. · 1987