F25J 1/0239
Purification or treatment step being integrated between two refrigeration cycles of a
Official title: {Purification or treatment step being integrated between two refrigeration cycles of a refrigeration cascade, i.e. first cycle providing feed gas cooling and second cycle providing overhead gas cooling}
F25J1/0239 (Purification or treatment step being integrated between two refrigeration cycles of a) appears on 37 US grants and 54 published applications in this corpus.
Search patents in F25J- Granted patents
- 37
- Published applications
- 54
- Assignees
- 31
- Inventors
- 89
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 3 |
| 2005 | 1 | 2 |
| 2006 | 1 | 1 |
| 2007 | 3 | 1 |
| 2008 | 0 | 5 |
| 2009 | 1 | 3 |
| 2010 | 0 | 5 |
| 2011 | 0 | 4 |
| 2012 | 0 | 1 |
| 2013 | 0 | 3 |
| 2014 | 0 | 2 |
| 2015 | 2 | 0 |
| 2016 | 1 | 3 |
| 2017 | 1 | 4 |
| 2018 | 1 | 3 |
| 2019 | 2 | 3 |
| 2020 | 3 | 1 |
| 2021 | 0 | 2 |
| 2022 | 2 | 1 |
| 2023 | 2 | 3 |
| 2024 | 1 | 2 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method and system for producing a liquefied natural gas product18 Aug 2026US 12,710,225 B2Linde Aktiengesellschaft
- Two-stage heavies removal in lng processing8 Oct 2024US 12,111,101 B2ConocoPhillips Company
- Pretreatment and pre-cooling of natural gas by high pressure compression and expansion14 Nov 2023US 11,815,308 B2ExxonMobil Technology and Engineering Company
- Heavy hydrocarbon removal system for lean natural gas liquefaction6 Jun 2023US 11,668,522 B2Air Products and Chemicals, Inc.
- Pretreatment and pre-cooling of natural gas by high pressure compression and expansion27 Dec 2022US 11,536,510 B2ExxonMobil Upstream Research Company
- Gas liquefaction system with multiple refrigerant cycles30 Oct 2025US 2025/0334330 A1Nuovo Pignone Tecnologie Srl
- Methods for operating hydrocarbon removal systems from natural gas streams26 Sep 2024US 2024/0318909 A1ExxonMobil Technology and Engineering Company
- Lng process using feedstock as primary refrigerant28 Mar 2024US 2024/0102729 A1JL Energy Transportation Inc.
- Compact system and method for the production of liquefied natural gas7 Dec 2023US 2023/0392860 A1Shell Oil Company
- System and Method for Cooling Fluids Containing Hydrogen or Helium16 Nov 2023US 2023/0366620 A1
Most cited
By later US patents
- Integrated high pressure NGL recovery in the production of liquefied natural gas94US 6,662,589 B1Air Products and Chemicals, Inc. · 2003
- Method of liquefaction of natural gas60US 5,291,736 ACompagnie Francaise d'Etudes et de Construction "Technip" · 1994
- Natural gas liquefaction58US 7,210,311 B2Ortloff Engineers, Ltd. · 2007
- Natural gas liquefaction56US 6,742,358 B2ElkCorp · 2004
- Natural gas liquefaction49US 7,010,937 B2ElkCorp · 2006