F25J 3/00
Processes or apparatus for separating the constituents of gaseous or liquefied gaseous
Official title: Processes or apparatus for separating the constituents of gaseous {or liquefied gaseous} mixtures involving the use of liquefaction or solidification
F25J3/00 (Processes or apparatus for separating the constituents of gaseous or liquefied gaseous) appears on 3,431 US grants and 2,984 published applications in this corpus.
Search patents in F25J- Granted patents
- 3,431
- Published applications
- 2,984
- Assignees
- 803
- Inventors
- 4,298
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 28 | 0 |
| 1978 | 23 | 0 |
| 1979 | 23 | 0 |
| 1980 | 25 | 0 |
| 1981 | 36 | 0 |
| 1982 | 28 | 0 |
| 1983 | 29 | 0 |
| 1984 | 46 | 0 |
| 1985 | 44 | 0 |
| 1986 | 44 | 0 |
| 1987 | 64 | 0 |
| 1988 | 64 | 0 |
| 1989 | 46 | 0 |
| 1990 | 41 | 0 |
| 1991 | 40 | 0 |
| 1992 | 65 | 0 |
| 1993 | 56 | 0 |
| 1994 | 75 | 0 |
| 1995 | 88 | 0 |
| 1996 | 75 | 0 |
| 1997 | 106 | 0 |
| 1998 | 90 | 0 |
| 1999 | 116 | 0 |
| 2000 | 98 | 0 |
| 2001 | 137 | 22 |
| 2002 | 77 | 70 |
| 2003 | 88 | 61 |
| 2004 | 48 | 85 |
| 2005 | 45 | 69 |
| 2006 | 46 | 96 |
| 2007 | 60 | 79 |
| 2008 | 42 | 108 |
| 2009 | 49 | 108 |
| 2010 | 29 | 132 |
| 2011 | 38 | 127 |
| 2012 | 46 | 139 |
| 2013 | 66 | 148 |
| 2014 | 70 | 130 |
| 2015 | 87 | 137 |
| 2016 | 94 | 133 |
| 2017 | 112 | 150 |
| 2018 | 121 | 164 |
| 2019 | 143 | 155 |
| 2020 | 115 | 152 |
| 2021 | 105 | 136 |
| 2022 | 93 | 137 |
| 2023 | 94 | 131 |
| 2024 | 96 | 124 |
| 2025 | 94 | 98 |
| 2026 | 69 | 93 |
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
- Liquefied hydrogen production device22 Sep 2026US 12,742,590 B2Jgc Corporation
- Dual temperature liquid oxygen subcooling in an air separation unit22 Sep 2026US 12,742,591 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Cryo-collection systems and related methods and hyperpolarizer systems22 Sep 2026US 12,742,592 B2Polarean, Inc.
- Method for generating refrigeration for a carbon monoxide cold box15 Sep 2026US 12,736,281 B2Praxair Technology, Inc.
- Method and device for separating a carbon dioxide-containing gas by partial condensation and/or distillation and/or solidification8 Oct 2026US 2026/0306989 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Methods and systems for efficient pressurized liquefied natural gas (plng) production, delivery, and use across mobile and stationary applications8 Oct 2026US 2026/0309409 A1Cryosys, LLC
- Process for starting up a carbon capture process1 Oct 2026US 2026/0295494 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method for liquefying carbon dioxide1 Oct 2026US 2026/0298531 A1
- 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
Most cited
By later US patents
- Hydrocarbon combustion power generation system with CO2 sequestration337US 6,389,814 B1Clean Energy Systems, Inc. · 2002
- Method for producing methane-containing gaseous mixtures305US 5,388,645 AAmoco Corporation · 1995
- Power plant with carbon dioxide capture and zero pollutant emissions254US 5,724,805 AUniversity of Massachusetts Lowell · 1998
- Method for recovering methane from a solid carbonaceous subterranean formation224US 5,566,755 AAmoco Corporation · 1996
- Hydrocarbon combustion power generation system with CO2 sequestration216US 7,043,920 B2Clean Energy Systems, Inc. · 2006