F25J 2290/00
Liquefaction, solidification or separation of gases or gaseous or liquefied gaseous mixtures
Official title: Other details not covered by groups F25J2200/00 - F25J2280/00
F25J2290/00 (Liquefaction, solidification or separation of gases or gaseous or liquefied gaseous mixtures) appears on 1,324 US grants and 1,343 published applications in this corpus.
Search patents in F25J- Granted patents
- 1,324
- Published applications
- 1,343
- Assignees
- 433
- Inventors
- 2,213
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 12 | 0 |
| 1978 | 8 | 0 |
| 1979 | 8 | 0 |
| 1980 | 16 | 0 |
| 1981 | 11 | 0 |
| 1982 | 7 | 0 |
| 1983 | 6 | 0 |
| 1984 | 11 | 0 |
| 1985 | 8 | 0 |
| 1986 | 19 | 0 |
| 1987 | 26 | 0 |
| 1988 | 16 | 0 |
| 1989 | 14 | 0 |
| 1990 | 5 | 0 |
| 1991 | 9 | 0 |
| 1992 | 20 | 0 |
| 1993 | 17 | 0 |
| 1994 | 19 | 0 |
| 1995 | 19 | 0 |
| 1996 | 24 | 0 |
| 1997 | 39 | 0 |
| 1998 | 31 | 0 |
| 1999 | 38 | 0 |
| 2000 | 39 | 0 |
| 2001 | 44 | 11 |
| 2002 | 36 | 23 |
| 2003 | 32 | 22 |
| 2004 | 21 | 31 |
| 2005 | 21 | 26 |
| 2006 | 19 | 44 |
| 2007 | 23 | 38 |
| 2008 | 17 | 52 |
| 2009 | 26 | 48 |
| 2010 | 11 | 72 |
| 2011 | 17 | 49 |
| 2012 | 16 | 49 |
| 2013 | 24 | 75 |
| 2014 | 33 | 53 |
| 2015 | 32 | 75 |
| 2016 | 38 | 37 |
| 2017 | 70 | 73 |
| 2018 | 42 | 89 |
| 2019 | 59 | 75 |
| 2020 | 54 | 72 |
| 2021 | 44 | 61 |
| 2022 | 58 | 70 |
| 2023 | 38 | 58 |
| 2024 | 44 | 58 |
| 2025 | 46 | 39 |
| 2026 | 29 | 43 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F25J 2290/62Details of storing a fluid in a tankIndexing code352
- F25J 2290/40Vertical layout or arrangement of cold equipments within in the cold boxIndexing code169
- F25J 2290/10Mathematical formulae, modeling, plot or curvesIndexing code167
- F25J 2290/42Modularity, pre-fabrication of modules, assembling and erection, horizontal layout, i.e. plot planIndexing code159
- F25J 2290/32Details on header or distribution passages of heat exchangersIndexing code153
- F25J 2290/12Particular process parameters like pressure, temperature, ratiosIndexing code149
- F25J 2290/34Details about subcooling of liquidsIndexing code120
- F25J 2290/44Particular materials usedIndexing code110
All 17 subgroupsShow fewer
- F25J 2290/80Retrofitting, revamping or debottlenecking of existing plantIndexing code93
- F25J 2290/60Details about pipelines, i.e. network, for feed or product distributionIndexing code79
- F25J 2290/72Processing device is used off-shoreIndexing code50
- F25J 2290/50Arrangement of multiple equipments fulfilling the same process step in parallelIndexing code44
- F25J 2290/70Processing device is mobile or transportableIndexing code38
- F25J 2290/30Details about heat insulation or cold insulationIndexing code16
- F25J 2290/90Details about safety operation of the installationIndexing code14
- F25J 2290/20Particular dimensionsIndexing code13
- F25J 2290/02Comparison of processes or apparatusesIndexing code5
Recent patents
- Controllable injection for implementing different local refrigerant distribution6 Oct 2026US 12,753,975 B2Linde Aktiengesellschaft
- Method for configuring a control system for a process plant29 Sep 2026US 12,747,912 B2Linde Aktiengesellschaft
- Method and apparatus for cryogenic air separation8 Sep 2026US 12,729,907 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Apparatus and process for improved argon recovery8 Sep 2026US 12,729,908 B2Air Products and Chemicals, Inc.
- Installation and method for liquefying a cryogenic fluid18 Aug 2026US 12,710,227 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Cryogenic process for helium recovery from low helium-containing gas stream24 Sep 2026US 2026/0287252 A1Council of Scientific and Industrial Research
- Method for cryogenic separation of air, and air separation plant10 Sep 2026US 2026/0266538 A1
- Cryogenic cooling system3 Sep 2026US 2026/0257609 A1
- Carbon dioxide recovery system and carbon dioxide recovery method3 Sep 2026US 2026/0257923 A1Toyota Jidosha Kabushiki Kaisha
- Assembly for storing a liquefied cryogenic fluid, vehicle and method27 Aug 2026US 2026/0251269 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
Most cited
By later US patents
- Methanol plant retrofit for acetic acid manufacture208US 6,232,352 B1Acetex limited · 2001
- Process for liquefaction of natural gas137US 6,023,942 AExxon Production Research Company · 2000
- Process for liquefying a natural gas stream containing at least one freezable component123US 5,956,971 AExxon Production Research Company · 1999
- Hydrocarbon gas processing122US 6,182,469 B2Elcor Corporation · 2001
- Hydrocarbon gas processing115US 4,854,955 AElcor Corporation · 1989