F25J 3/04442
In a double column flowsheet with a high pressure pre-rectifier
Official title: {in a double column flowsheet with a high pressure pre-rectifier}
F25J3/04442 (In a double column flowsheet with a high pressure pre-rectifier) appears on 17 US grants and 8 published applications in this corpus.
Search patents in F25J- Granted patents
- 17
- Published applications
- 8
- Assignees
- 7
- Inventors
- 26
- Latest grant
- 14 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 2 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 2 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method and apparatus for obtaining pressurized nitrogen by cryogenic separation of air14 Jan 2025US 12,196,485 B2Linde Aktiengesellschaft
- High-purity oxygen production system23 Jan 2024US 11,879,685 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method and unit for low-temperature air separation19 Dec 2023US 11,846,468 B2Linde Aktiengesellschaft
- Method and device for generating gaseous compressed nitrogen14 Sep 2021US 11,118,834 B2Linde Aktiengesellschaft
- Method and device for separating air by cryogenic distillation21 May 2019US 10,295,253 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method and unit for low-temperature air separation9 Dec 2021US 2021/0381761 A1Linde Aktiengesellschaft
- High-purity oxygen production system18 Mar 2021US 2021/0080171 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method and apparatus for obtaining pressurized nitrogen by cryogenic separation of air8 Aug 2019US 2019/0242646 A1Linde Aktiengesellschaft
- Method and device for separating air by cryogenic distillation25 Aug 2016US 2016/0245586 A1L'Air Liquide, Societe Anonyme pour I'Etude et I'Exploitation des Procedes Claude
- Method and device for generating gaseous compressed nitrogen7 Jan 2016US 2016/0003531 A1Linde Aktiengesellschaft
Most cited
By later US patents
- Integrated apparatus for generating power and/or oxygen enriched fluid and process for the operation thereof91US 6,202,442 B1L'Air Liquide Societe Anonyme Pour l'Etude et l'Expoitation des Procedes Georges Claude · 2001
- Integrated apparatus for generating power and/or oxygen enriched fluid, process for the operation thereof82US 6,276,171 B1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude · 2001
- Air separation with medium pressure enrichment30US 4,433,989 A1984
- Triple distillation column nitrogen generator with plural reboiler/condensers25US 5,069,699 AAir Products and Chemicals, Inc. · 1991
- High pressure oxygen pumped LOX rectifier24US 4,604,116 A1986