F25J 1/0279
Compression of refrigerant or internal recycle fluid
Official title: {Compression of refrigerant or internal recycle fluid, e.g. kind of compressor, accumulator, suction drum etc.}
F25J1/0279 (Compression of refrigerant or internal recycle fluid) appears on 609 US grants and 813 published applications in this corpus.
Search patents in F25J- Granted patents
- 609
- Published applications
- 813
- Assignees
- 241
- Inventors
- 1,282
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 7 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 8 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 6 | 0 |
| 1997 | 9 | 0 |
| 1998 | 11 | 0 |
| 1999 | 5 | 0 |
| 2000 | 10 | 0 |
| 2001 | 15 | 4 |
| 2002 | 18 | 1 |
| 2003 | 10 | 6 |
| 2004 | 9 | 18 |
| 2005 | 6 | 11 |
| 2006 | 12 | 13 |
| 2007 | 7 | 14 |
| 2008 | 4 | 22 |
| 2009 | 13 | 32 |
| 2010 | 6 | 50 |
| 2011 | 9 | 29 |
| 2012 | 5 | 21 |
| 2013 | 13 | 24 |
| 2014 | 12 | 36 |
| 2015 | 9 | 30 |
| 2016 | 14 | 47 |
| 2017 | 21 | 47 |
| 2018 | 32 | 63 |
| 2019 | 35 | 63 |
| 2020 | 47 | 39 |
| 2021 | 30 | 36 |
| 2022 | 47 | 60 |
| 2023 | 30 | 40 |
| 2024 | 47 | 50 |
| 2025 | 22 | 35 |
| 2026 | 22 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F25J 1/0281Characterised by the type of prime driver235
- F25J 1/0285Combination of different types of drivers mechanically coupled to the same refrigerant202
- F25J 1/0292Refrigerant compression by cold or cryogenic suction of the refrigerant gas199
- F25J 1/0294Multiple compressor casings/strings in parallel109
- F25J 1/0291Refrigerant compression by combined gas compression and liquid pumping91
- F25J 1/0296Removal of the heat of compression87
- F25J 1/0298Safety aspects and control of the refrigerant compression system72
- F25J 1/029Mechanically coupling of different refrigerant compressors in a cascade refrigeration system to27
Recent patents
- Single mixed refrigerant LNG production process22 Sep 2026US 12,742,588 B2Honeywell Lng LLC
- Liquefied hydrogen production device22 Sep 2026US 12,742,590 B2Jgc Corporation
- System and method for co-production of a densified liquid oxygen product and densified liquid methane product15 Sep 2026US 12,736,280 B2Praxair Technology, Inc.
- System and method for removing natural gas liquids from rich gas1 Sep 2026US 12,723,806 B2
- Power plant for controlling the renewable energy use in an LNG train18 Aug 2026US 12,710,013 B2
- Cycle gas refrigerator and liquefaction facility1 Oct 2026US 2026/0298529 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Cryogenic cooling system3 Sep 2026US 2026/0257609 A1
- Fluid liquefaction method and device27 Aug 2026US 2026/0251384 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Cascade refrigeration natural gas liquefaction system and process27 Aug 2026US 2026/0251385 A1Hangzhou Zhongtai Cryogenic Technology Corporation
- Cryogenic liquefaction system and method27 Aug 2026US 2026/0251386 A1Nearshore Natural Gas, LLC
Most cited
By later US patents
- Integrated process for converting hydrocarbon gas to liquids124US 6,248,794 B1Atlantic Richfield Company · 2001
- Process and system for liquefying natural gas124US 6,324,867 B1ExxonMobil Oil Corporation · 2001
- Process for removing carbon dioxide from combustion exhaust gas122US 5,344,627 AMitsubishi Jukogyo Kabushiki Kaisha · 1994
- Enhanced NGL recovery utilizing refrigeration and reflux from LNG plants112US 6,401,486 B12002
- Multi-component refrigeration process for liquefaction of natural gas100US 5,950,453 AExxon Production Research Company · 1999