F25J 2230/40
The fluid being air
Official title: the fluid being air
F25J2230/40 (The fluid being air) appears on 93 US grants and 107 published applications in this corpus.
Search patents in F25J- Granted patents
- 93
- Published applications
- 107
- Assignees
- 34
- Inventors
- 185
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 1 |
| 2002 | 1 | 1 |
| 2003 | 0 | 3 |
| 2004 | 0 | 0 |
| 2005 | 3 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 3 |
| 2008 | 0 | 2 |
| 2009 | 1 | 4 |
| 2010 | 2 | 4 |
| 2011 | 2 | 3 |
| 2012 | 0 | 10 |
| 2013 | 1 | 4 |
| 2014 | 2 | 6 |
| 2015 | 4 | 5 |
| 2016 | 3 | 9 |
| 2017 | 4 | 6 |
| 2018 | 3 | 7 |
| 2019 | 8 | 10 |
| 2020 | 10 | 6 |
| 2021 | 4 | 5 |
| 2022 | 2 | 2 |
| 2023 | 2 | 5 |
| 2024 | 6 | 2 |
| 2025 | 2 | 7 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air separation unit and method for cryogenic separation of air using a distillation column system including an intermediate pressure kettle column15 Sep 2026US 12,736,282 B2Praxair Technology, Inc.
- Method and a relative apparatus for producing liquified gases8 Sep 2026US 12,729,906 B2Fpt Industrial S.P.A.
- Apparatus and process for improved argon recovery8 Sep 2026US 12,729,908 B2Air Products and Chemicals, Inc.
- Nitrogen generating device and nitrogen generating method31 Mar 2026US 12,590,758 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- 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.
- System and method for the production and supply of a densified liquid oxygen product20 Aug 2026US 2026/0243506 A1
- Apparatus and method for maintaining or increasing liquid production of an air separation unit9 Jul 2026US 2026/0194295 A1Air Liquide Large Industries U.S. LP
- Air separation method and plant18 Dec 2025US 2025/0383144 A1Linde Aktiengesellschaft
- Liquid nitrogen generator and process30 Oct 2025US 2025/0334332 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Apparatus and Process for Improved Argon Recovery9 Oct 2025US 2025/0314424 A1Air Products and Chemicals, Inc.
Most cited
By later US patents
- Air separation process and system with gas turbine drivers97US 6,345,493 B1Air Products and Chemicals, Inc. · 2002
- Air bottoming cycle for coal gasification plant31US 4,785,621 AGeneral Electric Company · 1988
- System for compressing air and extracting nitrogen from compressed air31US 5,496,388 AAir Liquide America Corporation · 1996
- Combined installation of a metal production unit and a unit for the separation of air gas31US 5,538,534 AL Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude · 1996
- High availability gas turbine drive for an air separation unit28US 5,979,183 AAir Products and Chemicals, Inc. · 1999