F25J 3/04084
Of nitrogen
Official title: {of nitrogen}
F25J3/04084 (Of nitrogen) appears on 124 US grants and 127 published applications in this corpus.
Search patents in F25J- Granted patents
- 124
- Published applications
- 127
- Assignees
- 39
- Inventors
- 170
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 6 | 0 |
| 1996 | 4 | 0 |
| 1997 | 7 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 2 | 0 |
| 2001 | 8 | 0 |
| 2002 | 1 | 3 |
| 2003 | 4 | 2 |
| 2004 | 1 | 2 |
| 2005 | 1 | 3 |
| 2006 | 0 | 4 |
| 2007 | 4 | 1 |
| 2008 | 1 | 3 |
| 2009 | 1 | 4 |
| 2010 | 0 | 1 |
| 2011 | 0 | 7 |
| 2012 | 1 | 6 |
| 2013 | 1 | 5 |
| 2014 | 4 | 4 |
| 2015 | 3 | 5 |
| 2016 | 0 | 8 |
| 2017 | 3 | 8 |
| 2018 | 5 | 12 |
| 2019 | 11 | 7 |
| 2020 | 9 | 9 |
| 2021 | 9 | 6 |
| 2022 | 1 | 6 |
| 2023 | 4 | 9 |
| 2024 | 6 | 6 |
| 2025 | 6 | 4 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus for precooling hydrogen for liquefaction using external liquid nitrogen and high pressure gaseous nitrogen24 Mar 2026US 12,584,686 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Apparatus and process for liquefying gases9 Dec 2025US 12,492,864 B1
- Method for obtaining one or more air products, and air fractionation plant9 Sep 2025US 12,410,974 B2Linde Aktiengesellschaft
- Air separation unit and method for cryogenic separation of air using a distillation column system including an intermediate pressure kettle column8 Jul 2025US 12,352,496 B2Praxair Technology, Inc.
- Integrated nitrogen liquefier for a nitrogen and argon producing cryogenic air separation unit11 Mar 2025US 12,247,783 B2Linde Aktiengesellschaft
- Air separation method and air separation device30 Jul 2026US 2026/0218981 A1Taiyo Nippon Sanso Corporation
- Method for cryogenic separation of air, and air separation plant16 Jul 2026US 2026/0202125 A1Linde Aktiengesellschaft
- System and method for producing ammonia30 Oct 2025US 2025/0333316 A1Siemens Energy Global GmbH & Co. KG
- Apparatus and process for providing nitrogen and oxygen18 Sep 2025US 2025/0290692 A1Air Products and Chemicals, Inc.
- Cryogenic air rectification system, control unit, air separation unit and method of cryogenically separating air8 May 2025US 2025/0146746 A1Linde Aktiengesellschaft
Most cited
By later US patents
- High pressure combustion turbine and air separation system integration41US 5,666,823 AAir Products and Chemicals, Inc. · 1997
- Process and installation for production of high pressure gaseous fluid38US 5,475,980 AL'Air Liquide, Societe Anonyme pour l'Etude l'Exploitation des Procedes Georges Claude · 1995
- Process and apparatus for the production of gaseous oxygen under pressure29US 5,329,776 AL Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude · 1994
- Air separation with intermediate pressure vaporization and expansion19US 5,956,973 AAir Products and Chemicals, Inc. · 1999
- Rectifier liquid generated intermediate reflux for subambient cascades18US 4,854,954 A1989