F25J 2270/902
Details about the refrigeration cycle used
Official title: Details about the refrigeration cycle used, e.g. composition of refrigerant, arrangement of compressors or cascade, make up sources, use of reflux exchangers etc.
F25J2270/902 (Details about the refrigeration cycle used) appears on 90 US grants and 101 published applications in this corpus.
Search patents in F25J- Granted patents
- 90
- Published applications
- 101
- Assignees
- 46
- Inventors
- 176
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 2 |
| 2004 | 2 | 2 |
| 2005 | 0 | 1 |
| 2006 | 2 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 3 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 4 |
| 2012 | 0 | 2 |
| 2013 | 1 | 1 |
| 2014 | 1 | 1 |
| 2015 | 2 | 2 |
| 2016 | 1 | 5 |
| 2017 | 4 | 9 |
| 2018 | 8 | 8 |
| 2019 | 7 | 26 |
| 2020 | 5 | 7 |
| 2021 | 9 | 5 |
| 2022 | 13 | 2 |
| 2023 | 5 | 5 |
| 2024 | 3 | 5 |
| 2025 | 1 | 4 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for removing natural gas liquids from rich gas1 Sep 2026US 12,723,806 B2
- Method and plant for producing ethylene and/or other olefins by steam cracking26 Aug 2025US 12,398,082 B2BASF SE
- Dehydrogenation separation unit with mixed refrigerant cooling17 Sep 2024US 12,092,392 B2Chart Energy & Chemicals, Inc.
- System and method for removing natural gas liquids from rich gas17 Sep 2024US 12,092,393 B2
- Managing make-up gas composition variation for a high pressure expander process30 Jul 2024US 12,050,056 B2ExxonMobil Technology and Engineering Company
- Method for liquefying carbon dioxide1 Oct 2026US 2026/0298531 A1
- Carbon dioxide separation plant using external refrigeration circuit, and method13 Aug 2026US 2026/0235355 A1Nuovo Pignone Tecnologie Srl
- Energy efficient non-flammable refrigeration for co2-rich process streams25 Jun 2026US 2026/0177314 A1Uop LLC
- Method and apparatus for low-temperature separation of a gas containing co2 to produce a co2-rich fluid30 Oct 2025US 2025/0332535 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method and apparatus for low-temperature separation of a gas containing co2 to produce a co2-rich fluid30 Oct 2025US 2025/0334331 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
Most cited
By later US patents
- Method and apparatus for cryogenic fractionation of a gaseous feed86US 4,690,702 ACompagnie Francaise d'Etudes et de Construction "Technip" · 1987
- Process of fractionating gas feeds and apparatus for carrying out the said process85US 4,689,063 ACompagnie Francaise d'Etudes et de Construction "Technip" · 1987
- Fractionation process for gaseous hydrocarbon mixtures with a high acid gas content49US 4,976,849 ASNAMPROGETTI S.p. A. · 1990
- Process for recovering ethane, propane and heavier hydrocarbons from a natural gas stream40US 4,738,699 AFlexivol, Inc. · 1988
- Staged multicomponent refrigerant cycle for a process for recovery of C.sub.+ hydrocarbons38US 4,707,170 AAir Products and Chemicals, Inc. · 1987