F25J 2235/42
The fluid being nitrogen
Official title: the fluid being nitrogen
F25J2235/42 (The fluid being nitrogen) appears on 89 US grants and 75 published applications in this corpus.
Search patents in F25J- Granted patents
- 89
- Published applications
- 75
- Assignees
- 29
- Inventors
- 157
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 5 | 0 |
| 2000 | 4 | 0 |
| 2001 | 10 | 2 |
| 2002 | 7 | 1 |
| 2003 | 4 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 1 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 3 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 0 | 4 |
| 2014 | 1 | 1 |
| 2015 | 2 | 3 |
| 2016 | 1 | 3 |
| 2017 | 0 | 8 |
| 2018 | 3 | 6 |
| 2019 | 7 | 2 |
| 2020 | 3 | 2 |
| 2021 | 2 | 8 |
| 2022 | 3 | 5 |
| 2023 | 2 | 8 |
| 2024 | 3 | 6 |
| 2025 | 6 | 3 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Power generation process utilizing fuel, liquid air and/or oxygen with zero CO2 emissions28 Apr 2026US 12,613,064 B2Saipem S.P.A.
- 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.
- Method for separating hydrogen and nitrogen from cracked ammonia17 Feb 2026US 12,552,668 B2L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Claude Georges
- Process and plant for low-temperature separation of air9 Dec 2025US 12,492,863 B2Linde Aktiengesellschaft
- System and method for precooling in hydrogen or helium liquefaction processing9 Jul 2026US 2026/0194293 A1Air Water Gas Solutions, Inc.
- 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.
- High-purity oxygen production method, and air separation device for producing high-purity oxygen12 Jun 2025US 2025/0189218 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Nitrogen generating device and nitrogen generating method20 Feb 2025US 2025/0060158 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Stabilization process for the electrical network, the gas network and/or the hydrogen network and for producing ammonia23 Jan 2025US 2025/0026650 A1
Most cited
By later US patents
- 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
- 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
- Efficient process to produce oxygen48US 5,966,967 AAir Products and Chemicals, Inc. · 1999
- Method and apparatus for producing elevated pressure nitrogen29US 5,098,457 AUnion Carbide Industrial Gases Technology Corporation · 1992
- Plant for producing gaseous nitrogen28US 4,526,595 AAir Products and Chemicals, Inc. · 1985