F25J 2230/00
Processes or apparatus involving steps for increasing the pressure of gaseous process
Official title: Processes or apparatus involving steps for increasing the pressure of gaseous process streams
F25J2230/00 (Processes or apparatus involving steps for increasing the pressure of gaseous process) appears on 1,166 US grants and 1,468 published applications in this corpus.
Search patents in F25J- Granted patents
- 1,166
- Published applications
- 1,468
- Assignees
- 449
- Inventors
- 2,131
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 8 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 6 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 8 | 0 |
| 1985 | 5 | 0 |
| 1986 | 10 | 0 |
| 1987 | 14 | 0 |
| 1988 | 16 | 0 |
| 1989 | 11 | 0 |
| 1990 | 15 | 0 |
| 1991 | 8 | 0 |
| 1992 | 10 | 0 |
| 1993 | 7 | 0 |
| 1994 | 20 | 0 |
| 1995 | 14 | 0 |
| 1996 | 17 | 0 |
| 1997 | 14 | 0 |
| 1998 | 13 | 0 |
| 1999 | 18 | 0 |
| 2000 | 22 | 0 |
| 2001 | 28 | 8 |
| 2002 | 25 | 9 |
| 2003 | 10 | 17 |
| 2004 | 14 | 31 |
| 2005 | 19 | 21 |
| 2006 | 19 | 30 |
| 2007 | 24 | 26 |
| 2008 | 7 | 43 |
| 2009 | 20 | 48 |
| 2010 | 13 | 61 |
| 2011 | 19 | 54 |
| 2012 | 21 | 78 |
| 2013 | 32 | 68 |
| 2014 | 36 | 55 |
| 2015 | 27 | 64 |
| 2016 | 39 | 61 |
| 2017 | 62 | 85 |
| 2018 | 50 | 95 |
| 2019 | 56 | 88 |
| 2020 | 67 | 73 |
| 2021 | 52 | 82 |
| 2022 | 54 | 75 |
| 2023 | 55 | 75 |
| 2024 | 64 | 95 |
| 2025 | 47 | 77 |
| 2026 | 46 | 49 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F25J 2230/30Compression of the feed streamIndexing code488
- F25J 2230/60The fluid being hydrocarbons or a mixture of hydrocarbonsIndexing code315
- F25J 2230/08Cold compressor, i.e. suction of the gas at cryogenic temperature and generallyIndexing code252
- F25J 2230/20Integrated compressor and process expanderIndexing code237
- F25J 2230/04Compressor cooling arrangementIndexing code128
- F25J 2230/32Compression of the product streamIndexing code111
- F25J 2230/40The fluid being airIndexing code93
- F25J 2230/22Compressor driver arrangementIndexing code80
All 16 subgroupsShow fewer
- F25J 2230/42The fluid being nitrogenIndexing code76
- F25J 2230/24Multiple compressors or compressor stages in parallelIndexing code72
- F25J 2230/80The fluid being carbon dioxideIndexing code72
- F25J 2230/06Adiabatic compressor, i.e. without interstage coolingIndexing code59
- F25J 2230/02Compressor intake arrangementIndexing code24
- F25J 2230/52The fluid being oxygen enriched compared to airIndexing code24
- F25J 2230/50The fluid being oxygenIndexing code20
- F25J 2230/58The fluid being argon or crude argonIndexing code6
Recent patents
- Hydrogen liquefaction system and hydrogen liquefaction method29 Sep 2026US 12,747,911 B2H2CREO Corp.
- System for transforming a product22 Sep 2026US 12,742,521 B2Eifhytec
- Liquefied hydrogen production device22 Sep 2026US 12,742,590 B2Jgc Corporation
- System and method for co-production of a densified liquid oxygen product and densified liquid methane product15 Sep 2026US 12,736,280 B2Praxair Technology, Inc.
- 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.
- 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
- Method for supplying gaseous nitrogen and liquefying nitrogen8 Oct 2026US 2026/0309410 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method for liquefying a gas1 Oct 2026US 2026/0298530 A1
- Method for liquefying carbon dioxide1 Oct 2026US 2026/0298531 A1
- Co2 separation system1 Oct 2026US 2026/0298533 A1National Institute for Materials Science National Institute for Materials Science
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
- Low pressure process for C.sub.3.sup.+ liquids recovery from process product gas213US 4,734,115 AAir Products and Chemicals, Inc. · 1988
- Hydrocarbon combustion power generation system with CO2 sequestration209US 6,170,264 B2Clean Energy Systems, Inc. · 2001