F25J 3/04248
Generation of cold for compensating heat leaks or liquid production
Official title: {Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion}
F25J3/04248 (Generation of cold for compensating heat leaks or liquid production) appears on 920 US grants and 545 published applications in this corpus.
Search patents in F25J- Granted patents
- 920
- Published applications
- 545
- Assignees
- 150
- Inventors
- 849
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 4 | 0 |
| 1980 | 8 | 0 |
| 1981 | 9 | 0 |
| 1982 | 4 | 0 |
| 1983 | 11 | 0 |
| 1984 | 8 | 0 |
| 1985 | 12 | 0 |
| 1986 | 14 | 0 |
| 1987 | 17 | 0 |
| 1988 | 19 | 0 |
| 1989 | 25 | 0 |
| 1990 | 14 | 0 |
| 1991 | 18 | 0 |
| 1992 | 35 | 0 |
| 1993 | 34 | 0 |
| 1994 | 36 | 0 |
| 1995 | 49 | 0 |
| 1996 | 33 | 0 |
| 1997 | 52 | 0 |
| 1998 | 38 | 0 |
| 1999 | 50 | 0 |
| 2000 | 30 | 0 |
| 2001 | 55 | 9 |
| 2002 | 27 | 17 |
| 2003 | 29 | 11 |
| 2004 | 8 | 15 |
| 2005 | 6 | 10 |
| 2006 | 7 | 13 |
| 2007 | 9 | 19 |
| 2008 | 3 | 20 |
| 2009 | 9 | 23 |
| 2010 | 4 | 18 |
| 2011 | 3 | 26 |
| 2012 | 5 | 17 |
| 2013 | 10 | 26 |
| 2014 | 11 | 21 |
| 2015 | 16 | 20 |
| 2016 | 8 | 29 |
| 2017 | 12 | 32 |
| 2018 | 22 | 23 |
| 2019 | 28 | 26 |
| 2020 | 16 | 14 |
| 2021 | 16 | 28 |
| 2022 | 9 | 28 |
| 2023 | 16 | 41 |
| 2024 | 20 | 31 |
| 2025 | 23 | 15 |
| 2026 | 18 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F25J 3/04284Using internal refrigeration by open-loop gas work expansion785
- F25J 3/04375Details relating to the work expansion293
- F25J 3/04333Using quasi-closed loop internal vapor compression refrigeration cycles240
- F25J 3/04254Using the cold stored in external cryogenic fluids142
- F25J 3/04278Using external refrigeration units70
Recent patents
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- Refrigeration-integrated hydrocarbon collection system and method of operation25 Aug 2026US 12,716,649 B2Oxy Low Carbon Ventures, LLC
- Method for cryogenic separation of air, and air separation plant10 Sep 2026US 2026/0266538 A1
- Process and apparatus for purifying air and cryogenic air separation process and plant20 Aug 2026US 2026/0243508 A1
- System for producing compressed hydrogen13 Aug 2026US 2026/0234824 A1Ceres Intellectual Property Company Limited
- Process and apparatus for intermittent liquefaction operation that can support continuous air separation processing6 Aug 2026US 2026/0227123 A1Air Products and Chemicals, Inc.
- Air separation method and air separation device30 Jul 2026US 2026/0218981 A1Taiyo Nippon Sanso Corporation
Most cited
By later US patents
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