F25J 2235/00
Processes or apparatus involving steps for increasing the pressure or for conveying
Official title: Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
F25J2235/00 (Processes or apparatus involving steps for increasing the pressure or for conveying) appears on 756 US grants and 733 published applications in this corpus.
Search patents in F25J- Granted patents
- 756
- Published applications
- 733
- Assignees
- 240
- Inventors
- 1,143
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 5 | 0 |
| 1985 | 8 | 0 |
| 1986 | 11 | 0 |
| 1987 | 13 | 0 |
| 1988 | 25 | 0 |
| 1989 | 14 | 0 |
| 1990 | 13 | 0 |
| 1991 | 10 | 0 |
| 1992 | 8 | 0 |
| 1993 | 9 | 0 |
| 1994 | 10 | 0 |
| 1995 | 12 | 0 |
| 1996 | 16 | 0 |
| 1997 | 23 | 0 |
| 1998 | 17 | 0 |
| 1999 | 14 | 0 |
| 2000 | 18 | 0 |
| 2001 | 47 | 10 |
| 2002 | 27 | 12 |
| 2003 | 24 | 16 |
| 2004 | 8 | 24 |
| 2005 | 16 | 14 |
| 2006 | 16 | 23 |
| 2007 | 15 | 20 |
| 2008 | 9 | 29 |
| 2009 | 11 | 21 |
| 2010 | 3 | 24 |
| 2011 | 6 | 41 |
| 2012 | 5 | 37 |
| 2013 | 15 | 36 |
| 2014 | 13 | 31 |
| 2015 | 20 | 43 |
| 2016 | 21 | 35 |
| 2017 | 28 | 41 |
| 2018 | 38 | 39 |
| 2019 | 31 | 27 |
| 2020 | 33 | 27 |
| 2021 | 17 | 41 |
| 2022 | 23 | 27 |
| 2023 | 21 | 34 |
| 2024 | 21 | 34 |
| 2025 | 26 | 29 |
| 2026 | 13 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F25J 2235/60The fluid being hydrocarbonsIndexing code313
- F25J 2235/50The fluid being oxygenIndexing code166
- F25J 2235/80The fluid being carbon dioxideIndexing code94
- F25J 2235/42The fluid being nitrogenIndexing code89
- F25J 2235/02Processes or apparatus involving steps for increasing the pressure or for conveyingIndexing code77
- F25J 2235/58The fluid being argon or crude argonIndexing code66
- F25J 2235/52The fluid being oxygen enriched compared to airIndexing code28
- F25J 2235/04Processes or apparatus involving steps for increasing the pressure or for conveyingIndexing code22
All 9 subgroupsShow fewer
Recent patents
- Method and system for separating a gas mixture25 Aug 2026US 12,714,965 B2Linde Aktiengesellschaft
- Power generation process utilizing fuel, liquid air and/or oxygen with zero CO2 emissions25 Aug 2026US 12,716,650 B2Saipem S.P.A.
- 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
- Installation and method for liquefying a cryogenic fluid18 Aug 2026US 12,710,227 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Cryogenic gas cooling system and method16 Jun 2026US 12,656,057 B2Chart Energy & Chemicals, Inc.
- Cryogenic process for helium recovery from low helium-containing gas stream24 Sep 2026US 2026/0287252 A1Council of Scientific and Industrial Research
- Turbomachine27 Aug 2026US 2026/0251078 A1Kawasaki Jukogyo Kabushiki Kaisha
- Assembly for storing a liquefied cryogenic fluid, vehicle and method27 Aug 2026US 2026/0251269 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method and plant for separation of carbon dioxide (co2)27 Aug 2026US 2026/0251390 A1Aker Carbon Capture Norway AS
- Method for separating nitrogen from lng13 Aug 2026US 2026/0235353 A1Linde Aktiengesellschaft
Most cited
By later US patents
- Carbon dioxide recovery156US 4,762,543 AAmoco Corporation · 1988
- Hydrocarbon gas processing136US 4,140,504 AThe Ortloff Corporation · 1979
- Hydrocarbon gas processing122US 6,182,469 B2Elcor Corporation · 2001
- Hydrocarbon gas processing116US 4,157,904 AThe Ortloff Corporation · 1979
- Hydrocarbon gas processing115US 4,854,955 AElcor Corporation · 1989