F25J 3/04175
At a pressure of substantially more than the highest pressure column
Official title: {at a pressure of substantially more than the highest pressure column}
F25J3/04175 (At a pressure of substantially more than the highest pressure column) appears on 104 US grants and 95 published applications in this corpus.
Search patents in F25J- Granted patents
- 104
- Published applications
- 95
- Assignees
- 30
- Inventors
- 153
- Latest grant
- 24 Mar 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 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 5 | 0 |
| 1993 | 0 | 0 |
| 1994 | 5 | 0 |
| 1995 | 9 | 0 |
| 1996 | 7 | 0 |
| 1997 | 4 | 0 |
| 1998 | 7 | 0 |
| 1999 | 6 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 2 |
| 2005 | 1 | 1 |
| 2006 | 1 | 3 |
| 2007 | 0 | 5 |
| 2008 | 3 | 1 |
| 2009 | 2 | 3 |
| 2010 | 0 | 1 |
| 2011 | 0 | 6 |
| 2012 | 1 | 4 |
| 2013 | 1 | 4 |
| 2014 | 2 | 5 |
| 2015 | 2 | 3 |
| 2016 | 2 | 11 |
| 2017 | 2 | 10 |
| 2018 | 5 | 4 |
| 2019 | 9 | 10 |
| 2020 | 5 | 2 |
| 2021 | 5 | 1 |
| 2022 | 2 | 4 |
| 2023 | 1 | 7 |
| 2024 | 2 | 4 |
| 2025 | 3 | 2 |
| 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
- 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.
- Method for obtaining one or more air products, and air separation unit14 Jan 2025US 12,196,488 B2Linde Aktiengesellschaft
- 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
- 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
- Liquid nitrogen generator and process30 Oct 2025US 2025/0334332 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method for the cryogenic separation of air, and air separation plant13 Feb 2025US 2025/0052493 A1
- Method for the cryogenic separation of air, and air separation plant28 Nov 2024US 2024/0393042 A1Linde Aktiengesellschaft
Most cited
By later US patents
- Cryogenic processes for separating air43US 4,303,428 AL Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude · 1981
- 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
- Cryogenic hybrid system for producing high purity argon37US 5,730,003 APraxair Technology, Inc. · 1998
- Cryogenic air separation system with liquid air stripping32US 5,440,884 APraxair Technology, Inc. · 1995
- Process for refrigerating, corresponding refrigerating cycle and their application to the distillation of air31US 5,157,926 AL Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude · 1992