F25J 2245/00
Processes or apparatus involving steps for recycling of process streams
F25J2245/00 (Processes or apparatus involving steps for recycling of process streams) appears on 1,392 US grants and 1,374 published applications in this corpus.
Search patents in F25J- Granted patents
- 1,392
- Published applications
- 1,374
- Assignees
- 410
- Inventors
- 1,975
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 8 | 0 |
| 1978 | 6 | 0 |
| 1979 | 5 | 0 |
| 1980 | 7 | 0 |
| 1981 | 12 | 0 |
| 1982 | 8 | 0 |
| 1983 | 9 | 0 |
| 1984 | 16 | 0 |
| 1985 | 10 | 0 |
| 1986 | 18 | 0 |
| 1987 | 25 | 0 |
| 1988 | 23 | 0 |
| 1989 | 18 | 0 |
| 1990 | 24 | 0 |
| 1991 | 18 | 0 |
| 1992 | 22 | 0 |
| 1993 | 15 | 0 |
| 1994 | 24 | 0 |
| 1995 | 31 | 0 |
| 1996 | 24 | 0 |
| 1997 | 40 | 0 |
| 1998 | 34 | 0 |
| 1999 | 34 | 0 |
| 2000 | 35 | 0 |
| 2001 | 55 | 13 |
| 2002 | 41 | 25 |
| 2003 | 35 | 32 |
| 2004 | 21 | 33 |
| 2005 | 19 | 32 |
| 2006 | 22 | 38 |
| 2007 | 24 | 36 |
| 2008 | 22 | 54 |
| 2009 | 20 | 50 |
| 2010 | 15 | 56 |
| 2011 | 28 | 54 |
| 2012 | 25 | 66 |
| 2013 | 29 | 52 |
| 2014 | 27 | 40 |
| 2015 | 26 | 49 |
| 2016 | 28 | 50 |
| 2017 | 51 | 79 |
| 2018 | 41 | 73 |
| 2019 | 49 | 62 |
| 2020 | 56 | 65 |
| 2021 | 45 | 82 |
| 2022 | 47 | 75 |
| 2023 | 49 | 75 |
| 2024 | 64 | 85 |
| 2025 | 39 | 59 |
| 2026 | 42 | 39 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F25J 2245/02Recycle of a stream in generalIndexing code816
- F25J 2245/42The recycled stream being nitrogenIndexing code230
- F25J 2245/90The recycled stream being boil-off gas from storageIndexing code200
- F25J 2245/50The recycled stream being oxygenIndexing code169
- F25J 2245/40The recycled stream being airIndexing code119
- F25J 2245/58The recycled stream being argon or crude argonIndexing code70
Recent patents
- Hydrogen liquefaction system and hydrogen liquefaction method15 Sep 2026US 12,736,279 B2H2CREO Corp.
- 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.
- Apparatus and process for improved argon recovery8 Sep 2026US 12,729,908 B2Air Products and Chemicals, Inc.
- Method and system for separating a gas mixture25 Aug 2026US 12,714,965 B2Linde Aktiengesellschaft
- 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 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
- Cryogenic process for helium recovery from low helium-containing gas stream24 Sep 2026US 2026/0287252 A1Council of Scientific and Industrial Research
- Method for cryogenic separation of air, and air separation plant10 Sep 2026US 2026/0266538 A1
- Carbon dioxide recovery system and carbon dioxide recovery method3 Sep 2026US 2026/0257923 A1Toyota Jidosha Kabushiki Kaisha
Most cited
By later US patents
- Low pressure process for C.sub.3.sup.+ liquids recovery from process product gas213US 4,734,115 AAir Products and Chemicals, Inc. · 1988
- Closed cycle gas turbine for gaseous production199US 4,434,613 AGeneral Electric Company · 1984
- Process for liquefaction of natural gas137US 6,023,942 AExxon Production Research Company · 2000
- Hydrocarbon gas processing134US 5,568,737 AElcor Corporation · 1996
- Distillative separations of gas mixtures containing methane, carbon dioxide and other components129US 4,462,814 AKoch Process Systems, Inc. · 1984