F25J 1/0047
Using an "external" refrigerant stream in a closed vapor compression cycle
Official title: {using an "external" refrigerant stream in a closed vapor compression cycle (F25J1/0221, F25J1/0225 take precedence)}
F25J1/0047 (Using an "external" refrigerant stream in a closed vapor compression cycle) appears on 663 US grants and 888 published applications in this corpus.
Search patents in F25J- Granted patents
- 663
- Published applications
- 888
- Assignees
- 255
- Inventors
- 1,369
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 8 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 8 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 7 | 0 |
| 1985 | 9 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 8 | 0 |
| 1997 | 14 | 0 |
| 1998 | 10 | 0 |
| 1999 | 9 | 0 |
| 2000 | 17 | 0 |
| 2001 | 15 | 3 |
| 2002 | 20 | 1 |
| 2003 | 18 | 11 |
| 2004 | 14 | 15 |
| 2005 | 6 | 14 |
| 2006 | 7 | 11 |
| 2007 | 11 | 19 |
| 2008 | 5 | 25 |
| 2009 | 13 | 35 |
| 2010 | 4 | 55 |
| 2011 | 8 | 30 |
| 2012 | 6 | 27 |
| 2013 | 13 | 32 |
| 2014 | 17 | 29 |
| 2015 | 8 | 34 |
| 2016 | 17 | 43 |
| 2017 | 32 | 48 |
| 2018 | 24 | 57 |
| 2019 | 31 | 52 |
| 2020 | 45 | 53 |
| 2021 | 25 | 45 |
| 2022 | 43 | 61 |
| 2023 | 40 | 55 |
| 2024 | 41 | 64 |
| 2025 | 29 | 38 |
| 2026 | 26 | 31 |
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.
- Single mixed refrigerant LNG production process22 Sep 2026US 12,742,588 B2Honeywell Lng LLC
- Closed loop LNG process for a feed gas with nitrogen22 Sep 2026US 12,742,589 B2ConocoPhillips Company
- 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.
- Process and apparatus for air separation by cryogenic distillation1 Oct 2026US 2026/0298532 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Carbon dioxide reliquefaction system and carbon dioxide reliquefaction method which use closed cycle17 Sep 2026US 2026/0276299 A1Hanwha Ocean Co., Ltd.
- Cryogenic cooling system3 Sep 2026US 2026/0257609 A1
- Assembly for storing a liquefied cryogenic fluid, vehicle and method27 Aug 2026US 2026/0251269 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Fluid liquefaction method and device27 Aug 2026US 2026/0251384 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
Most cited
By later US patents
- LNG production using dual independent expander refrigeration cycles149US 6,412,302 B1ABB Lummus Global, Inc. - Randall Division · 2002
- Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator136US 5,979,440 ASeQual Technologies, Inc. · 1999
- Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator133US 6,698,423 B1SeQual Technologies, Inc. · 2004
- 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