F25J 3/04006
Providing pressurised feed air or process streams within or from the air
Official title: {Providing pressurised feed air or process streams within or from the air fractionation unit}
F25J3/04006 (Providing pressurised feed air or process streams within or from the air) appears on 744 US grants and 602 published applications in this corpus.
Search patents in F25J- Granted patents
- 744
- Published applications
- 602
- Assignees
- 165
- Inventors
- 773
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 8 | 0 |
| 1988 | 12 | 0 |
| 1989 | 7 | 0 |
| 1990 | 6 | 0 |
| 1991 | 2 | 0 |
| 1992 | 16 | 0 |
| 1993 | 14 | 0 |
| 1994 | 21 | 0 |
| 1995 | 32 | 0 |
| 1996 | 27 | 0 |
| 1997 | 35 | 0 |
| 1998 | 29 | 0 |
| 1999 | 36 | 0 |
| 2000 | 31 | 0 |
| 2001 | 47 | 9 |
| 2002 | 23 | 14 |
| 2003 | 26 | 16 |
| 2004 | 11 | 20 |
| 2005 | 10 | 12 |
| 2006 | 8 | 21 |
| 2007 | 14 | 21 |
| 2008 | 5 | 20 |
| 2009 | 11 | 22 |
| 2010 | 3 | 23 |
| 2011 | 10 | 25 |
| 2012 | 5 | 26 |
| 2013 | 10 | 31 |
| 2014 | 12 | 22 |
| 2015 | 18 | 21 |
| 2016 | 13 | 32 |
| 2017 | 21 | 37 |
| 2018 | 28 | 32 |
| 2019 | 31 | 26 |
| 2020 | 29 | 22 |
| 2021 | 19 | 28 |
| 2022 | 8 | 29 |
| 2023 | 17 | 34 |
| 2024 | 24 | 27 |
| 2025 | 19 | 17 |
| 2026 | 10 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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.
- Apparatus and process for improved argon recovery8 Sep 2026US 12,729,908 B2Air Products and Chemicals, Inc.
- Air separation unit and air separation method25 Aug 2026US 12,716,651 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method and plant for low temperature fractionation of air18 Aug 2026US 12,710,228 B2Linde Aktiengesellschaft
- System for storing and producing energy to stabilize the power network26 May 2026US 12,638,234 B2Saipem S.P.A.
- Process and apparatus for air separation by cryogenic distillation1 Oct 2026US 2026/0298532 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Process and apparatus for purifying air and cryogenic air separation process and plant20 Aug 2026US 2026/0243508 A1
- Air separation device20 Aug 2026US 2026/0243509 A1L 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.
- Air separation method and air separation device30 Jul 2026US 2026/0218981 A1Taiyo Nippon Sanso Corporation
Most cited
By later US patents
- Hydrocarbon combustion power generation system with CO2 sequestration337US 6,389,814 B1Clean Energy Systems, Inc. · 2002
- Power plant with carbon dioxide capture and zero pollutant emissions254US 5,724,805 AUniversity of Massachusetts Lowell · 1998
- Hydrocarbon combustion power generation system with CO2 sequestration216US 7,043,920 B2Clean Energy Systems, Inc. · 2006
- Hydrocarbon combustion power generation system with CO2 sequestration209US 6,170,264 B2Clean Energy Systems, Inc. · 2001
- Solid-fueled power generation system with carbon dioxide sequestration and method therefor203US 6,148,602 ANorther Research & Engineering Corporation · 2000