F25J 2220/44
Separating high boiling, i.e. less volatile components from nitrogen
Official title: Separating high boiling, i.e. less volatile components from nitrogen, e.g. CO, Ar, O2, hydrocarbons
F25J2220/44 (Separating high boiling, i.e. less volatile components from nitrogen) appears on 44 US grants and 30 published applications in this corpus.
Search patents in F25J- Granted patents
- 44
- Published applications
- 30
- Assignees
- 23
- Inventors
- 79
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 7 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 1 | 3 |
| 2012 | 1 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 1 | 5 |
| 2017 | 3 | 11 |
| 2018 | 2 | 2 |
| 2019 | 2 | 0 |
| 2020 | 1 | 0 |
| 2021 | 1 | 2 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Device and method for recovering carbon dioxide and nitrogen from flue gas14 Apr 2026US 12,601,540 B2Hangzhou Oxygen Plant Group Co., Ltd.
- Cryogenic liquefier by integration with power plant31 Jan 2023US 11,566,841 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Increasing efficiency in an LNG production system by pre-cooling a natural gas feed stream13 Jul 2021US 11,060,791 B2ExxonMobil Upstream Research Company
- Methods and systems for integration of industrial site efficiency losses to produce LNG and/or LIN18 Feb 2020US 10,563,914 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Liquefied natural gas production system and method with greenhouse gas removal19 Nov 2019US 10,480,854 B2ExxonMobil Upstream Research Company
- System and method for simultaneously producing high-purity liquid nitrogen and high-purity liquid carbon dioxide at low cost by using flue gas26 Feb 2026US 2026/0055956 A1Hangzhou Oxygen Plant Group Co., Ltd.
- Device and method for recovering carbon dioxide and nitrogen from flue gas8 Aug 2024US 2024/0263873 A1Hangzhou Oxygen Plant Group Co., Ltd.
- Systems and Methods of Removing Contaminants in a Liquid Nitrogen Stream Used to Liquefy Natural Gas25 Nov 2021US 2021/0364229 A1ExxonMobil Upstream Research Company
- Cryogenic liquefier by integration with power plant27 May 2021US 2021/0156303 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Increasing Efficiency in an LNG Production System by Pre-Cooling a Natural Gas Feed Stream16 Aug 2018US 2018/0231305 A1
Most cited
By later US patents
- Process and apparatus for producing liquid carbon dioxide93US 5,233,837 AEnerfex, Inc. · 1993
- Recovery of volatile organic compounds from gas streams38US 5,450,728 AAir Products and Chemicals, Inc. · 1995
- Carbon dioxide production from combustion exhaust gases with nitrogen and argon by-product recovery34US 5,100,635 AThe BOC Group, Inc. · 1992
- Process for the purification of the inert gases34US 5,204,075 AThe BOC Group, Inc. · 1993
- Carbon dioxide production from combustion exhaust gases with nitrogen and argon by-product recovery31US 5,185,139 AThe BOC Group, Inc. · 1993