F25J 2270/14
External refrigeration with work-producing gas expansion loop
F25J2270/14 (External refrigeration with work-producing gas expansion loop) appears on 195 US grants and 290 published applications in this corpus.
Search patents in F25J- Granted patents
- 195
- Published applications
- 290
- Assignees
- 96
- Inventors
- 442
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 2 | 4 |
| 2005 | 1 | 2 |
| 2006 | 2 | 3 |
| 2007 | 0 | 1 |
| 2008 | 1 | 4 |
| 2009 | 4 | 6 |
| 2010 | 1 | 18 |
| 2011 | 5 | 15 |
| 2012 | 4 | 6 |
| 2013 | 7 | 11 |
| 2014 | 5 | 9 |
| 2015 | 3 | 8 |
| 2016 | 6 | 7 |
| 2017 | 12 | 14 |
| 2018 | 7 | 23 |
| 2019 | 6 | 14 |
| 2020 | 12 | 11 |
| 2021 | 12 | 16 |
| 2022 | 10 | 23 |
| 2023 | 10 | 30 |
| 2024 | 14 | 35 |
| 2025 | 10 | 19 |
| 2026 | 13 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hydrogen liquefaction system and hydrogen liquefaction method29 Sep 2026US 12,747,911 B2H2CREO Corp.
- Cryogenic gas cooling system and method16 Jun 2026US 12,656,057 B2Chart Energy & Chemicals, Inc.
- Hydrogen liquefaction with stored hydrogen refrigeration source9 Jun 2026US 12,650,259 B2Chart Energy & Chemicals, Inc.
- System for storing and producing energy to stabilize the power network26 May 2026US 12,638,234 B2Saipem S.P.A.
- Oxygen liquefier design phasing26 May 2026US 12,638,235 B2L 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
- Cryogenic type boil-off gas reliquefaction system20 Aug 2026US 2026/0243505 A1Shanghai Marine Diesel Engine Research Institute
- System and method for the production and supply of a densified liquid oxygen product20 Aug 2026US 2026/0243506 A1
- System and method for precooling in hydrogen or helium liquefaction processing9 Jul 2026US 2026/0194293 A1Air Water Gas Solutions, Inc.
Most cited
By later US patents
- Process and apparatus for producing liquid carbon dioxide93US 5,233,837 AEnerfex, Inc. · 1993
- Argon recovery from argon-oxygen-decarburization process waste gases71US 5,125,934 AThe BOC Group, Inc. · 1992
- Liquefaction apparatus50US 6,250,244 B1BHP Petroleum Pty Ltd. · 2001
- Liquefaction process and apparatus49US 6,446,465 B1BHP Petroleum Pty Ltd. · 2002
- Gasification combined cycle power generation process with heat-integrated chemical production48US 5,865,023 AAir Products and Chemicals, Inc. · 1999