F25J 3/04163
Hot end purification of the feed air
Official title: {Hot end purification of the feed air (arrangements of cold regenerators F25J5/00)}
F25J3/04163 (Hot end purification of the feed air) appears on 300 US grants and 243 published applications in this corpus.
Search patents in F25J- Granted patents
- 300
- Published applications
- 243
- Assignees
- 79
- Inventors
- 433
- Latest grant
- 19 May 2026
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| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
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| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 11 | 0 |
| 1993 | 3 | 0 |
| 1994 | 9 | 0 |
| 1995 | 12 | 0 |
| 1996 | 14 | 0 |
| 1997 | 15 | 0 |
| 1998 | 12 | 0 |
| 1999 | 16 | 0 |
| 2000 | 13 | 0 |
| 2001 | 9 | 2 |
| 2002 | 8 | 7 |
| 2003 | 11 | 2 |
| 2004 | 4 | 7 |
| 2005 | 2 | 1 |
| 2006 | 4 | 12 |
| 2007 | 3 | 7 |
| 2008 | 3 | 4 |
| 2009 | 6 | 8 |
| 2010 | 2 | 4 |
| 2011 | 3 | 15 |
| 2012 | 1 | 10 |
| 2013 | 3 | 8 |
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| 2015 | 4 | 7 |
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| 2017 | 9 | 17 |
| 2018 | 8 | 11 |
| 2019 | 16 | 17 |
| 2020 | 15 | 9 |
| 2021 | 12 | 13 |
| 2022 | 4 | 12 |
| 2023 | 10 | 16 |
| 2024 | 7 | 11 |
| 2025 | 9 | 6 |
| 2026 | 4 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Liquid hydrogen vaporization system and liquid hydrogen vaporization method19 May 2026US 12,631,372 B2H2CREO Corp.
- Adsorber, purification system, and purification method7 Apr 2026US 12,595,960 B2Air Products and Chemicals, Inc.
- Apparatus for precooling hydrogen for liquefaction using external liquid nitrogen and high pressure gaseous nitrogen24 Mar 2026US 12,584,686 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- System for generating an inert gas for an aircraft using liquid hydrogen3 Feb 2026US 12,540,772 B2Airbus Operations GmbH
- Method for obtaining one or more air products, and air fractionation plant9 Sep 2025US 12,410,974 B2Linde Aktiengesellschaft
- Process and apparatus for purifying air and cryogenic air separation process and plant20 Aug 2026US 2026/0243508 A1
- Air separation method and air separation device30 Jul 2026US 2026/0218981 A1Taiyo Nippon Sanso Corporation
- Method for cryogenic separation of air, and air separation plant16 Jul 2026US 2026/0202125 A1Linde Aktiengesellschaft
- Apparatus and method for maintaining or increasing liquid production of an air separation unit9 Jul 2026US 2026/0194295 A1Air Liquide Large Industries U.S. LP
- Compressed carbon dioxide energy storage system and method combined with air separation technology25 Jun 2026US 2026/0176984 A1Xi' An Jiaotong University
Most cited
By later US patents
- Hydrocarbon combustion power generation system with CO2 sequestration337US 6,389,814 B1Clean Energy Systems, Inc. · 2002
- Hydrocarbon combustion power generation system with CO2 sequestration216US 7,043,920 B2Clean Energy Systems, Inc. · 2006
- Hydrocarbon combustion power generation system with CO2 sequestration209US 6,170,264 B2Clean Energy Systems, Inc. · 2001
- Hydrocarbon combustion power generation system with CO2 sequestration163US 6,598,398 B2Clean Energy Systems, Inc. · 2003
- Low pollution power generation system with ion transfer membrane air separation154US 6,945,029 B2Clean Energy Systems, Inc. · 2005