F25J 2240/12
The fluid being nitrogen
Official title: the fluid being nitrogen
F25J2240/12 (The fluid being nitrogen) appears on 78 US grants and 82 published applications in this corpus.
Search patents in F25J- Granted patents
- 78
- Published applications
- 82
- Assignees
- 41
- Inventors
- 174
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 5 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 3 |
| 2005 | 1 | 1 |
| 2006 | 2 | 4 |
| 2007 | 0 | 0 |
| 2008 | 4 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 3 |
| 2011 | 0 | 1 |
| 2012 | 0 | 4 |
| 2013 | 0 | 2 |
| 2014 | 0 | 0 |
| 2015 | 3 | 3 |
| 2016 | 0 | 1 |
| 2017 | 2 | 12 |
| 2018 | 5 | 9 |
| 2019 | 3 | 3 |
| 2020 | 4 | 2 |
| 2021 | 0 | 4 |
| 2022 | 2 | 5 |
| 2023 | 5 | 5 |
| 2024 | 2 | 7 |
| 2025 | 0 | 7 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for separating methane and nitrogen with reduced horsepower demands19 May 2026US 12,631,393 B2BCCK Holding Company
- Method and apparatus for separating carbon dioxide from a residual gas in a fluidised bed catalytic cracking plant (FCC)17 Feb 2026US 12,551,840 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method of hydrogen liquefaction using optimized claude refrigeration cycles6 Jan 2026US 12,516,877 B2Evergreen Cryogenics Inc.
- Process and apparatus for the separation of air by cryogenic distillation3 Sep 2024US 12,078,415 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Natural gas liquefaction by a high pressure expansion process6 Feb 2024US 11,892,233 B2ExxonMobil Technology and Engineering Company
- System and method for precooling in hydrogen or helium liquefaction processing9 Jul 2026US 2026/0194293 A1Air Water Gas Solutions, Inc.
- Method of Hydrogen Liquefaction Using Optimized Claude Refrigeration Cycles2 Apr 2026US 2026/0092734 A1Evergreen Cryogenics Inc.
- Process for remote lox/lin production by hpair turbo expansion2 Oct 2025US 2025/0305764 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Air separation unit21 Aug 2025US 2025/0264274 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Hydrogen cooling31 Jul 2025US 2025/0244075 A1
Most cited
By later US patents
- Method for the recovery of low purity carbon dioxide104US 4,977,745 A1990
- Membrane-augmented power generation94US 6,035,641 AMembane Technology and Research, Inc. · 2000
- Process and apparatus for producing liquid carbon dioxide93US 5,233,837 AEnerfex, Inc. · 1993
- Process to remove nitrogen and/or carbon dioxide from methane-containing streams75US 7,314,503 B2Syntroleum Corporation · 2008
- Liquefied natural gas refrigeration transfer to a cryogenics air separation unit using high presure nitrogen stream67US 5,137,558 AAir Products and Chemicals, Inc. · 1992