F25J 3/0429
Of feed air
Official title: {of feed air, e.g. used as waste or product air or expanded into an auxiliary column}
F25J3/0429 (Of feed air) appears on 610 US grants and 361 published applications in this corpus.
Search patents in F25J- Granted patents
- 610
- Published applications
- 361
- Assignees
- 87
- Inventors
- 529
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 7 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 6 | 0 |
| 1987 | 12 | 0 |
| 1988 | 9 | 0 |
| 1989 | 13 | 0 |
| 1990 | 9 | 0 |
| 1991 | 13 | 0 |
| 1992 | 21 | 0 |
| 1993 | 21 | 0 |
| 1994 | 19 | 0 |
| 1995 | 39 | 0 |
| 1996 | 25 | 0 |
| 1997 | 39 | 0 |
| 1998 | 26 | 0 |
| 1999 | 36 | 0 |
| 2000 | 16 | 0 |
| 2001 | 37 | 4 |
| 2002 | 16 | 10 |
| 2003 | 19 | 9 |
| 2004 | 6 | 10 |
| 2005 | 5 | 6 |
| 2006 | 5 | 7 |
| 2007 | 6 | 12 |
| 2008 | 3 | 11 |
| 2009 | 4 | 12 |
| 2010 | 0 | 12 |
| 2011 | 3 | 19 |
| 2012 | 3 | 12 |
| 2013 | 5 | 17 |
| 2014 | 10 | 16 |
| 2015 | 10 | 11 |
| 2016 | 7 | 25 |
| 2017 | 10 | 25 |
| 2018 | 19 | 19 |
| 2019 | 24 | 22 |
| 2020 | 11 | 11 |
| 2021 | 13 | 17 |
| 2022 | 5 | 20 |
| 2023 | 11 | 24 |
| 2024 | 14 | 18 |
| 2025 | 17 | 7 |
| 2026 | 7 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for configuring a control system for a process plant29 Sep 2026US 12,747,912 B2Linde Aktiengesellschaft
- System for storing and producing energy to stabilize the power network26 May 2026US 12,638,234 B2Saipem S.P.A.
- Oxygen liquefier design phasing26 May 2026US 12,638,235 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method for separating air by cryogenic distillation26 May 2026US 12,638,239 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Power generation process utilizing fuel, liquid air and/or oxygen with zero CO2 emissions28 Apr 2026US 12,613,064 B2Saipem S.P.A.
- 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
- Apparatus and method for maintaining or increasing liquid production of an air separation unit9 Jul 2026US 2026/0194295 A1Air Liquide Large Industries U.S. LP
- Method for increasing production flexibility of an air separation unit28 May 2026US 2026/0146790 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Heat exchanger5 Feb 2026US 2026/0036366 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
- Hydrocarbon combustion power generation system with CO2 sequestration163US 6,598,398 B2Clean Energy Systems, Inc. · 2003