F25J 2245/42
The recycled stream being nitrogen
Official title: the recycled stream being nitrogen
F25J2245/42 (The recycled stream being nitrogen) appears on 230 US grants and 200 published applications in this corpus.
Search patents in F25J- Granted patents
- 230
- Published applications
- 200
- Assignees
- 56
- Inventors
- 355
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 6 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 8 | 0 |
| 1993 | 3 | 0 |
| 1994 | 9 | 0 |
| 1995 | 6 | 0 |
| 1996 | 5 | 0 |
| 1997 | 12 | 0 |
| 1998 | 5 | 0 |
| 1999 | 11 | 0 |
| 2000 | 3 | 0 |
| 2001 | 12 | 4 |
| 2002 | 11 | 7 |
| 2003 | 15 | 5 |
| 2004 | 1 | 5 |
| 2005 | 3 | 2 |
| 2006 | 2 | 5 |
| 2007 | 1 | 2 |
| 2008 | 5 | 13 |
| 2009 | 0 | 3 |
| 2010 | 2 | 4 |
| 2011 | 7 | 14 |
| 2012 | 3 | 6 |
| 2013 | 5 | 7 |
| 2014 | 5 | 5 |
| 2015 | 5 | 4 |
| 2016 | 1 | 4 |
| 2017 | 5 | 17 |
| 2018 | 1 | 13 |
| 2019 | 5 | 7 |
| 2020 | 8 | 3 |
| 2021 | 6 | 17 |
| 2022 | 3 | 9 |
| 2023 | 11 | 21 |
| 2024 | 7 | 9 |
| 2025 | 8 | 8 |
| 2026 | 7 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for co-production of a densified liquid oxygen product and densified liquid methane product15 Sep 2026US 12,736,280 B2Praxair Technology, Inc.
- Method and plant for low temperature fractionation of air18 Aug 2026US 12,710,228 B2Linde Aktiengesellschaft
- Liquid nitrogen energy storage system21 Apr 2026US 12,607,399 B2Praxair Technology, Inc.
- Device and method for recovering carbon dioxide and nitrogen from flue gas14 Apr 2026US 12,601,540 B2Hangzhou Oxygen Plant Group Co., Ltd.
- Air separation apparatus7 Apr 2026US 12,595,961 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method for cryogenic separation of air, and air separation plant10 Sep 2026US 2026/0266538 A1
- Single Column Nitrogen Rejection Unit20 Aug 2026US 2026/0243507 A1Chart Energy & Chemicals, Inc.
- Method for separating nitrogen from lng13 Aug 2026US 2026/0235353 A1Linde Aktiengesellschaft
- Nitrogen management in an lng plant6 Aug 2026US 2026/0227121 A1ConocoPhillips Company
- Air separation unit2 Apr 2026US 2026/0092735 A1L' Air Liquide, Societe Anonyme pour I' Etude et I'Exploitation des Procedes Georges Claude
Most cited
By later US patents
- Process for recovering hydrogen from a multi-component gas stream113US 4,654,063 AAir Products and Chemicals, Inc. · 1987
- Operation of an air separation process with a combustion engine for the production of atmospheric gas products and electric power99US 6,256,994 B1Air Products and Chemicals, Inc. · 2001
- Integrated apparatus for generating power and/or oxygen enriched fluid and process for the operation thereof91US 6,202,442 B1L'Air Liquide Societe Anonyme Pour l'Etude et l'Expoitation des Procedes Georges Claude · 2001
- Method and apparatus for removing pollutants from flue gas84US 5,467,722 A1995
- Integrated apparatus for generating power and/or oxygen enriched fluid, process for the operation thereof82US 6,276,171 B1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude · 2001