F25J 3/04418
With thermally overlapping high and low pressure columns
Official title: {with thermally overlapping high and low pressure columns}
F25J3/04418 (With thermally overlapping high and low pressure columns) appears on 69 US grants and 22 published applications in this corpus.
Search patents in F25J- Granted patents
- 69
- Published applications
- 22
- Assignees
- 18
- Inventors
- 80
- Latest grant
- 28 Aug 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 10 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 2 | 0 |
| 2001 | 8 | 1 |
| 2002 | 1 | 1 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 3 |
| 2013 | 0 | 4 |
| 2014 | 0 | 1 |
| 2015 | 2 | 1 |
| 2016 | 0 | 2 |
| 2017 | 3 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Air separation apparatus to produce oxygen and nitrogen through isobaric separation28 Aug 2018US 10,060,672 B2Nanjing Reclaimer Environmental Teknik Co., Ltd
- Method and device for oxygen production by low-temperature separation of air at variable energy consumption24 Oct 2017US 9,797,654 B2Linde Aktiengesellschaft
- Method and apparatus for separating air by cryogenic distillation4 Jul 2017US 9,696,087 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Air separation plant and process operating by cryogenic distillation3 Jan 2017US 9,534,836 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Device for the cryogenic separation of air27 Oct 2015US 9,170,048 B2Linde Aktiengesellschaft
- Enhancements to a dual column nitrogen producing cryogenic air separation unit2 Dec 2021US 2021/0372698 A1
- Method and device for obtaining pure nitrogen and pure oxygen by low-temperature separation of air27 Dec 2018US 2018/0372405 A1Linde Aktiengesellschaft
- Method and device for oxygen production by low-temperature separation of air at variable energy consumption5 May 2016US 2016/0123662 A1Linde Aktiengesellschaft
- Method and device for producing gaseous compressed oxygen having variable power consumption7 Jan 2016US 2016/0003536 A1Linde Aktiengesellschaft
- Air Separation Apparatus for Isobaric Separation and Production of Oxygen and Nitrogen10 Dec 2015US 2015/0354888 A1Nanjing Reclaimer Environmental Teknik Co., Ltd
Most cited
By later US patents
- Efficient process to produce oxygen48US 5,966,967 AAir Products and Chemicals, Inc. · 1999
- Cycle to produce low purity oxygen35US 4,704,148 AAir Products and Chemicals, Inc. · 1987
- Air separation process for the production of oxygen-rich and nitrogen-rich products34US 4,936,099 AAir Products and Chemicals, Inc. · 1990
- Dual air pressure cycle to produce low purity oxygen24US 4,702,757 AAir Products and Chemicals, Inc. · 1987
- Air separation schemes for oxygen and nitrogen coproduction as gas and/or liquid products24US 5,355,681 AAir Products and Chemicals, Inc. · 1994