F25J 3/0466
As a parallel working rectification column or auxiliary column system in a
Official title: {as a parallel working rectification column or auxiliary column system in a single pressure main column system}
F25J3/0466 (As a parallel working rectification column or auxiliary column system in a) appears on 21 US grants and 6 published applications in this corpus.
Search patents in F25J- Granted patents
- 21
- Published applications
- 6
- Assignees
- 9
- Inventors
- 30
- Latest grant
- 6 Sep 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 3 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and apparatus for separating air by cryogenic distillation6 Sep 2022US 11,435,139 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- System and method for generation of oxygen by low-temperature air separation8 May 2018US 9,964,353 B2Linde Aktiengesellschaft
- Process and plant for separating air by cryogenic distillation26 Nov 2002US 6,484,534 B2L'Air Liquide - Societe Anonyme a'Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes George Claude
- Processes for multicomponent separation11 Sep 2001US 6,286,335 B1Air Products and Chemicals, Inc.
- Method and installation for air distillation with production of argon7 Aug 2001US 6,269,659 B1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Process and apparatus for intermittent liquefaction operation that can support continuous air separation processing6 Aug 2026US 2026/0227123 A1Air Products and Chemicals, Inc.
- Method and apparatus for separating air by cryogenic distillation26 Nov 2020US 2020/0370825 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- System and method for generation of oxygen by low-temperature air separation15 Sep 2016US 2016/0265841 A1Linde Aktiengesellschaft
- Method and device for separation at cryogenic temperature4 Aug 2016US 2016/0223253 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method and device for separation at sub-ambient temperature28 Jul 2016US 2016/0216013 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
Most cited
By later US patents
- Distillation process to separate mixtures containing three or more components21US 6,116,051 AAir Products and Chemicals, Inc. · 2000
- Distillation schemes for multicomponent separations16US 5,970,742 AAir Products and Chemicals, Inc. · 1999
- Cryogenic rectification system with argon heat pump13US 5,228,296 APraxair Technology, Inc. · 1993
- Liquid vapor contact method and apparatus12US 4,717,409 AThe BOC Group, Inc. · 1988
- Method and apparatus for recovering argon from an air fractionating process11US 4,057,407 AS.I.A.D. Societa' Italiana Acetilene E Derivati · 1977