F25J 2270/80
Quasi-closed internal or closed external carbon dioxide refrigeration cycle
F25J2270/80 (Quasi-closed internal or closed external carbon dioxide refrigeration cycle) appears on 33 US grants and 62 published applications in this corpus.
Search patents in F25J- Granted patents
- 33
- Published applications
- 62
- Assignees
- 24
- Inventors
- 110
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 4 |
| 2012 | 0 | 0 |
| 2013 | 0 | 8 |
| 2014 | 1 | 6 |
| 2015 | 0 | 9 |
| 2016 | 3 | 4 |
| 2017 | 4 | 1 |
| 2018 | 2 | 2 |
| 2019 | 2 | 4 |
| 2020 | 5 | 2 |
| 2021 | 3 | 1 |
| 2022 | 2 | 4 |
| 2023 | 4 | 2 |
| 2024 | 1 | 4 |
| 2025 | 2 | 2 |
| 2026 | 1 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for liquefying a stream rich in CO23 Feb 2026US 12,540,771 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method and apparatus for liquefying a CO2-rich gas23 Dec 2025US 12,504,226 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Dehydration of carbon dioxide22 Apr 2025US 12,280,330 B2Air Products and Chemicals, Inc.
- Integrated hydrogen production and bio-renewable conversion process30 Jul 2024US 12,049,400 B2Uop LLC
- Method of producing a hydrogen-enriched product and recovering CO2 in a hydrogen production process unit14 Nov 2023US 11,814,287 B2Uop LLC
- Method and plant for separation of carbon dioxide (co2)27 Aug 2026US 2026/0251390 A1Aker Carbon Capture Norway AS
- Method and apparatus for liquefying and/or separating a mixture containing co230 Jul 2026US 2026/0217528 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Process and apparatus for removing co2 from a gasification syngas16 Jul 2026US 2026/0200728 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method for liquefying a stream rich in co216 Jul 2026US 2026/0202124 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Energy efficient non-flammable refrigeration for co2-rich process streams25 Jun 2026US 2026/0177314 A1Uop LLC
Most cited
By later US patents
- Gas purification process27US 4,371,381 ACryoplants Limited · 1983
- Method for carbon dioxide recovery from a feed stream25US 5,974,829 APraxair Technology, Inc. · 1999
- Purification of carbon dioxide13US 8,900,355 B2Air Products and Chemicals, Inc. · 2014
- Purification of carbon dioxide7US 7,850,763 B2Air Products and Chemicals, Inc. · 2010
- Highly cost effective technology for capture of industrial emissions without reagent for clean energy and clean environment applications5US 10,670,334 B2Sustainable Green Power Industries · 2020