F25J 1/0224
In combination with an internal quasi-closed refrigeration loop
Official title: {in combination with an internal quasi-closed refrigeration loop (F25J1/0208, F25J1/0219 take precedence)}
F25J1/0224 (In combination with an internal quasi-closed refrigeration loop) appears on 40 US grants and 40 published applications in this corpus.
Search patents in F25J- Granted patents
- 40
- Published applications
- 40
- Assignees
- 30
- Inventors
- 89
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 2 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 7 |
| 2018 | 1 | 6 |
| 2019 | 1 | 4 |
| 2020 | 7 | 5 |
| 2021 | 3 | 3 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 2 | 4 |
| 2025 | 1 | 0 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Device and method for recovering gas with variable low-temperature23 Jun 2026US 12,663,210 B2Hangzhou Oxygen Plant Group Co., Ltd.
- 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.
- Heat-of-compression recycle system, and sub-systems thereof13 May 2025US 12,301,000 B2Highview Enterprises Limited
- Method and apparatus for air separation by cryogenic distillation2 Jul 2024US 12,025,372 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Cryogenic liquefaction system and method27 Aug 2026US 2026/0251386 A1Nearshore Natural Gas, LLC
- Apparatus and process for hydrogen recycling to avoid liquefier shutdown due to insufficient feed of hydrogen19 Feb 2026US 2026/0049761 A1Air Products and Chemicals, Inc.
- Process for Producing Liquefied Hydrogen10 Oct 2024US 2024/0337438 A1Gasconsult Limited
- Device and Method for Recovering Gas with Variable Low-Temperature5 Sep 2024US 2024/0295359 A1Hangzhou Oxygen Plant Group Co., Ltd.
- Process for cooling a gas by means of a refrigeration cycle1 Aug 2024US 2024/0255219 A1L' Air Liquide, Societe Anonyme pour I' Etude et I'Exploitation des Procedes Georges Claude
Most cited
By later US patents
- Liquefied natural gas refrigeration transfer to a cryogenics air separation unit using high presure nitrogen stream67US 5,137,558 AAir Products and Chemicals, Inc. · 1992
- Incorporated cascade cooling cycle for liquefying a gas by regasifying liquefied natural gas48US 4,054,433 AL Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude · 1977
- Production of liquid nitrogen using liquefied natural gas as sole refrigerant48US 5,139,547 AAir Products and Chemicals, Inc. · 1992
- Natural gas letdown liquefaction system48US 6,131,407 A2000
- Use of liquefied natural gas (LNG) coupled with a cold expander to produce liquid nitrogen38US 5,141,543 AAir Products and Chemicals, Inc. · 1992