F25J 1/0274
Retrofitting or revamping of an existing liquefaction unit
Official title: {Retrofitting or revamping of an existing liquefaction unit}
F25J1/0274 (Retrofitting or revamping of an existing liquefaction unit) appears on 41 US grants and 53 published applications in this corpus.
Search patents in F25J- Granted patents
- 41
- Published applications
- 53
- Assignees
- 31
- Inventors
- 114
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 1 |
| 2004 | 1 | 6 |
| 2005 | 1 | 2 |
| 2006 | 5 | 4 |
| 2007 | 4 | 2 |
| 2008 | 1 | 5 |
| 2009 | 1 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 3 |
| 2016 | 0 | 1 |
| 2017 | 1 | 7 |
| 2018 | 1 | 5 |
| 2019 | 2 | 2 |
| 2020 | 3 | 3 |
| 2021 | 2 | 2 |
| 2022 | 2 | 4 |
| 2023 | 1 | 1 |
| 2024 | 2 | 1 |
| 2025 | 1 | 0 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and apparatus for liquefying a gas rich in carbon dioxide26 May 2026US 12,638,238 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Liquid nitrogen energy storage system21 Apr 2026US 12,607,399 B2Praxair Technology, Inc.
- Apparatus and process for liquefying gases9 Dec 2025US 12,492,864 B1
- Containerised LNG liquefaction unit and associated method of producing LNG8 Oct 2024US 12,111,100 B2Woodside Energy Technologies Pty Ltd
- Method of cooling boil off gas and an apparatus therefor18 Jun 2024US 12,013,179 B2LGE IP Management Company Limited
- Liquefaction of natural gas feeds containing hydrogen5 Mar 2026US 2026/0063359 A1Honeywell Lng LLC
- Method and apparatus for liquefying a gas rich in carbon dioxide1 Aug 2024US 2024/0255218 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Liquid nitrogen energy storage system21 Dec 2023US 2023/0408188 A1Praxair Technology, Inc.
- Method and system for decarbonized lng production11 Aug 2022US 2022/0252341 A1Air Products and Chemicals, Inc.
- Method Of Cooling Boil Off Gas And An Apparatus Therefor16 Jun 2022US 2022/0187014 A1LGE IP Management Company Limited
Most cited
By later US patents
- LNG production in cryogenic natural gas processing plants108US 5,615,561 AWilliams Field Services Company · 1997
- Hybrid cycle for the production of liquefied natural gas77US 6,308,531 B1Air Products and Chemicals, Inc. · 2001
- Process and apparatus to produce a small scale LNG stream from an existing NGL expander plant demethanizer60US 5,600,969 APhillips Petroleum Company · 1997
- Plant for liquefying natural gas51US 6,389,844 B1Shell Oil Company · 2002
- Natural gas pretreatment prior to liquefaction44US 4,822,393 AKryos Energy Inc. · 1989