F25J 2270/912
Liquefaction cycle of a low-boiling gas in a cryocooler, i.e. in a
Official title: Liquefaction cycle of a low-boiling (feed) gas in a cryocooler, i.e. in a closed-loop refrigerator
F25J2270/912 (Liquefaction cycle of a low-boiling gas in a cryocooler, i.e. in a) appears on 56 US grants and 40 published applications in this corpus.
Search patents in F25J- Granted patents
- 56
- Published applications
- 40
- Assignees
- 39
- Inventors
- 154
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 1 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 2 |
| 2008 | 0 | 0 |
| 2009 | 2 | 2 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 5 |
| 2014 | 1 | 3 |
| 2015 | 1 | 3 |
| 2016 | 0 | 2 |
| 2017 | 3 | 4 |
| 2018 | 3 | 2 |
| 2019 | 5 | 1 |
| 2020 | 5 | 1 |
| 2021 | 1 | 2 |
| 2022 | 1 | 2 |
| 2023 | 0 | 0 |
| 2024 | 1 | 4 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Automated stirling peltier liquid air battery16 Jun 2026US 12,656,025 B2The Government of the United States of America, as represented by the Secretary of the Navy
- Cryocooler suitable for gas liquefaction applications, gas liquefaction system and method comprising the same21 Oct 2025US 12,449,196 B2Consejo Superior De Investigaciones Cientificas (Csic)
- Magnetic refrigeration systems for cryogenic applications10 Dec 2024US 12,163,701 B2General Engineering & Research, L.L.C.
- Cryogenic gas separator20 Sep 2022US 11,448,459 B1The Tisdale Group
- Helium management control system26 Jan 2021US 10,900,699 B2Edwards Vacuum LLC
- Low noise liquid helium reliquifying circulation apparatus28 May 2026US 2026/0146786 A1Korea Research Institute of Standards and Science
- Titanium or titanium alloy heat exchanger1 May 2025US 2025/0137731 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Hydrogen liquefaction device and hydrogen liquefaction method19 Sep 2024US 2024/0310115 A1H2CREO Corp.
- Cryocooler Suitable for Gas Liquefaction Applications, Gas Liquefaction System and Method Comprising the Same8 Aug 2024US 2024/0263872 A1Consejo Superior De Investigaciones Cientificas (Csic)
- Automated stirling-pelitier liquid air battery13 Jun 2024US 2024/0191912 A1The Government of the United States of America, as represented by the Secretary of the Navy
Most cited
By later US patents
- Low temperature refrigeration process for helium or hydrogen mixtures using mixed refrigerant31US 3,992,167 AUnion Carbide Corporation · 1976
- Apparatus for a refrigeration circuit31US 4,242,885 ASulzer Brothers Limited · 1981
- Parallel wrapped tube heat exchanger26US 4,785,879 AAPD Cryogenics, Inc. · 1988
- Method and apparatus for cooling high temperature superconductors with neon-nitrogen mixtures26US 5,193,349 AChicago Bridge & Iron Technical Services Company · 1993
- Method for providing refrigeration using a turboexpander cycle25US 6,438,994 B1Praxair Technology, Inc. · 2002