F25J 2270/60
Closed external refrigeration cycle with single component refrigerant [scr]
Official title: Closed external refrigeration cycle with single component refrigerant [SCR], e.g. C1-, C2- or C3-hydrocarbons
F25J2270/60 (Closed external refrigeration cycle with single component refrigerant [scr]) appears on 322 US grants and 329 published applications in this corpus.
Search patents in F25J- Granted patents
- 322
- Published applications
- 329
- Assignees
- 134
- Inventors
- 533
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 6 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 7 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 9 | 0 |
| 2000 | 6 | 0 |
| 2001 | 7 | 2 |
| 2002 | 7 | 4 |
| 2003 | 6 | 3 |
| 2004 | 4 | 9 |
| 2005 | 6 | 15 |
| 2006 | 4 | 6 |
| 2007 | 12 | 9 |
| 2008 | 2 | 7 |
| 2009 | 4 | 13 |
| 2010 | 4 | 22 |
| 2011 | 1 | 16 |
| 2012 | 4 | 15 |
| 2013 | 7 | 9 |
| 2014 | 5 | 8 |
| 2015 | 11 | 10 |
| 2016 | 11 | 15 |
| 2017 | 11 | 18 |
| 2018 | 11 | 12 |
| 2019 | 19 | 43 |
| 2020 | 20 | 18 |
| 2021 | 20 | 24 |
| 2022 | 16 | 13 |
| 2023 | 11 | 13 |
| 2024 | 10 | 12 |
| 2025 | 10 | 7 |
| 2026 | 7 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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.
- Cryogenic gas cooling system and method16 Jun 2026US 12,656,057 B2Chart Energy & Chemicals, Inc.
- Process for separating hydrogen from an olefin hydrocarbon effluent vapor stream2 Jun 2026US 12,643,067 B2Enflex, Inc.
- Standalone high-pressure heavies removal unit for LNG processing26 May 2026US 12,638,236 B2ConocoPhillips Company
- Enhanced hydrogen recovery utilizing gas separation membranes integrated with pressure swing adsorption unit and/or cryogenic separation system31 Mar 2026US 12,589,994 B2Lummus Technology Inc.
- Cascade refrigeration natural gas liquefaction system and process27 Aug 2026US 2026/0251385 A1Hangzhou Zhongtai Cryogenic Technology Corporation
- Method and plant for separation of carbon dioxide (co2)27 Aug 2026US 2026/0251390 A1Aker Carbon Capture Norway AS
- Configurations and methods for ngl recovery for high nitrogen content feed gases13 Aug 2026US 2026/0235354 A1Fluor Technologies Corporation
- Nitrogen management in an lng plant6 Aug 2026US 2026/0227121 A1ConocoPhillips Company
- Systems and methods for removing nitrogen during liquefaction of natural gas5 Feb 2026US 2026/0036367 A1ConocoPhillips Company
Most cited
By later US patents
- Hydrocarbon gas processing136US 4,140,504 AThe Ortloff Corporation · 1979
- Hydrocarbon gas processing115US 4,854,955 AElcor Corporation · 1989
- Separating hydrocarbon gases114US 4,617,039 APro-Quip Corporation · 1986
- Enhanced NGL recovery utilizing refrigeration and reflux from LNG plants112US 6,401,486 B12002
- Distillative processing of CO.sub.2 and hydrocarbons for enhanced oil recovery109US 4,753,666 AChevron Research Company · 1988