F25J 2235/58
The fluid being argon or crude argon
Official title: the fluid being argon or crude argon
F25J2235/58 (The fluid being argon or crude argon) appears on 66 US grants and 40 published applications in this corpus.
Search patents in F25J- Granted patents
- 66
- Published applications
- 40
- Assignees
- 14
- Inventors
- 100
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 7 | 0 |
| 1997 | 8 | 0 |
| 1998 | 6 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 0 |
| 2002 | 1 | 3 |
| 2003 | 3 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 0 |
| 2009 | 2 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 2 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 3 |
| 2018 | 1 | 1 |
| 2019 | 2 | 2 |
| 2020 | 2 | 1 |
| 2021 | 1 | 4 |
| 2022 | 1 | 6 |
| 2023 | 2 | 4 |
| 2024 | 2 | 4 |
| 2025 | 3 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System for purifying argon by cryogenic distillation23 Dec 2025US 12,503,365 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Air separation unit by cryogenic distillation1 Jul 2025US 12,345,469 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
- Air separation device and air separation method22 Oct 2024US 12,123,647 B2Taiyo Nippon Sanso Corporation
- Cryogenic air separation unit with argon condenser vapor recycle19 Mar 2024US 11,933,541 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
- Method for the low-temperature separation of air and air separation plant28 Nov 2024US 2024/0393043 A1Linde Aktiengesellschaft
- Plant and method for low-temperature air separation14 Nov 2024US 2024/0377129 A1Linde Aktiengesellschaft
- Plant and process for low-temperature fractionation of air14 Nov 2024US 2024/0377131 A1Linde Aktiengesellschaft
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 air separation system with liquid air stripping32US 5,440,884 APraxair Technology, Inc. · 1995
- Enhanced recovery of argon from cryogenic air separation cycles31US 5,114,449 AAir Products and Chemicals, Inc. · 1992
- Process for recovering argon30US 4,575,388 ANihon Sanso Kabushiki Kaisha · 1986
- Method of purifying argon through cryogenic adsorption29US 5,159,816 AAir Products and Chemicals, Inc. · 1992