F25J 2245/40
The recycled stream being air
Official title: the recycled stream being air
F25J2245/40 (The recycled stream being air) appears on 119 US grants and 101 published applications in this corpus.
Search patents in F25J- Granted patents
- 119
- Published applications
- 101
- Assignees
- 36
- Inventors
- 216
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 6 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 7 | 0 |
| 1988 | 6 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 7 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 2 | 2 |
| 2003 | 4 | 4 |
| 2004 | 0 | 1 |
| 2005 | 1 | 2 |
| 2006 | 2 | 1 |
| 2007 | 1 | 2 |
| 2008 | 1 | 1 |
| 2009 | 1 | 6 |
| 2010 | 1 | 4 |
| 2011 | 3 | 6 |
| 2012 | 1 | 6 |
| 2013 | 2 | 3 |
| 2014 | 2 | 2 |
| 2015 | 2 | 3 |
| 2016 | 1 | 4 |
| 2017 | 6 | 8 |
| 2018 | 1 | 6 |
| 2019 | 5 | 5 |
| 2020 | 5 | 3 |
| 2021 | 3 | 9 |
| 2022 | 1 | 5 |
| 2023 | 3 | 3 |
| 2024 | 6 | 10 |
| 2025 | 2 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air separation unit and air separation method25 Aug 2026US 12,716,651 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- 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
- Method for operating an air separation plant, having a distillation column system, a heat exchanger and an adsorber, and air separation plant14 Oct 2025US 12,442,593 B2Linde Aktiengesellschaft
- System and method for cryogenic air separation using four distillation columns including an intermediate pressure column28 Jan 2025US 12,209,802 B2Praxair Technology, Inc.
- Apparatus and method for separation of air by cryogenic distillation31 Dec 2024US 12,181,217 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Process and apparatus for purifying air and cryogenic air separation process and plant20 Aug 2026US 2026/0243508 A1
- Air separation method and air separation device30 Jul 2026US 2026/0218981 A1Taiyo Nippon Sanso Corporation
- Air separation method and plant18 Dec 2025US 2025/0383144 A1Linde Aktiengesellschaft
- Process for remote lox/lin production by hpair turbo expansion2 Oct 2025US 2025/0305764 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method for the low-temperature separation of air and air separation plant28 Nov 2024US 2024/0393043 A1Linde Aktiengesellschaft
Most cited
By later US patents
- Integrated air separation - gas turbine electrical generation process51US 5,406,786 AAir Products and Chemicals, Inc. · 1995
- Compressor supercharger with evaporative cooler37US 5,282,726 APraxair Technology, Inc. · 1994
- Cycle to produce low purity oxygen35US 4,704,148 AAir Products and Chemicals, Inc. · 1987
- Air bottoming cycle for coal gasification plant31US 4,785,621 AGeneral Electric Company · 1988
- Liquid-vapor contact method and apparatus31US 4,843,828 AThe BOC Group, Inc. · 1989