F25J 3/0423
Subcooling of liquid process streams
Official title: {Subcooling of liquid process streams}
F25J3/0423 (Subcooling of liquid process streams) appears on 103 US grants and 97 published applications in this corpus.
Search patents in F25J- Granted patents
- 103
- Published applications
- 97
- Assignees
- 26
- Inventors
- 169
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 5 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 7 | 3 |
| 2002 | 0 | 2 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 1 | 2 |
| 2007 | 0 | 3 |
| 2008 | 0 | 3 |
| 2009 | 3 | 3 |
| 2010 | 0 | 2 |
| 2011 | 1 | 4 |
| 2012 | 0 | 3 |
| 2013 | 3 | 5 |
| 2014 | 2 | 0 |
| 2015 | 4 | 5 |
| 2016 | 2 | 3 |
| 2017 | 2 | 2 |
| 2018 | 1 | 2 |
| 2019 | 2 | 13 |
| 2020 | 6 | 6 |
| 2021 | 4 | 4 |
| 2022 | 5 | 9 |
| 2023 | 3 | 7 |
| 2024 | 5 | 11 |
| 2025 | 4 | 2 |
| 2026 | 3 | 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 plant for low temperature fractionation of air18 Aug 2026US 12,710,228 B2Linde Aktiengesellschaft
- Method for separating air by cryogenic distillation26 May 2026US 12,638,239 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Process and plant for low-temperature separation of air9 Dec 2025US 12,492,863 B2Linde Aktiengesellschaft
- Heat exchanger and separation apparatus comprising a heat exchanger2 Sep 2025US 12,405,054 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- High-purity oxygen production apparatus5 Mar 2026US 2026/0063360 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Heat exchanger5 Feb 2026US 2026/0036366 A1Taiyo Nippon Sanso Corporation
- Apparatus and process for providing nitrogen and oxygen18 Sep 2025US 2025/0290692 A1Air Products and Chemicals, Inc.
- Process and plant for providing a nitrogen product, an oxygen product and a hydrogen product28 Aug 2025US 2025/0271208 A1Linde Aktiengesellschaft
- Method for the low-temperature separation of air and air separation plant28 Nov 2024US 2024/0393043 A1Linde Aktiengesellschaft
Most cited
By later US patents
- Tonnage nitrogen generator38US 4,222,756 AAir Products and Chemicals, Inc. · 1980
- High speed pressure swing adsorption liquid oxygen/liquid nitrogen generating plant34US 4,957,523 APacific Consolidated Industries, LLC · 1990
- Process for producing ultra high purity oxygen32US 4,615,716 AAir Products and Chemicals, Inc. · 1986
- Liquid-vapor contact method and apparatus31US 4,843,828 AThe BOC Group, Inc. · 1989
- Liquid products using an air and a nitrogen recycle liquefier30US 4,705,548 AAir Products and Chemicals, Inc. · 1987