F25J 2220/02
Separating impurities in general from the feed stream
F25J2220/02 (Separating impurities in general from the feed stream) appears on 79 US grants and 111 published applications in this corpus.
Search patents in F25J- Granted patents
- 79
- Published applications
- 111
- Assignees
- 50
- Inventors
- 243
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 3 | 2 |
| 2012 | 2 | 2 |
| 2013 | 0 | 7 |
| 2014 | 0 | 2 |
| 2015 | 3 | 2 |
| 2016 | 3 | 2 |
| 2017 | 6 | 20 |
| 2018 | 5 | 17 |
| 2019 | 8 | 10 |
| 2020 | 10 | 8 |
| 2021 | 9 | 7 |
| 2022 | 3 | 3 |
| 2023 | 3 | 7 |
| 2024 | 4 | 8 |
| 2025 | 5 | 6 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydrogen liquefaction with stored hydrogen refrigeration source9 Jun 2026US 12,650,259 B2Chart Energy & Chemicals, Inc.
- Method of hydrogen liquefaction using optimized claude refrigeration cycles6 Jan 2026US 12,516,877 B2Evergreen Cryogenics Inc.
- Carbon dioxide recycle stream processing with ethylene glycol dehydrating in an enhanced oil recovery process18 Nov 2025US 12,474,115 B2Pilot Intellectual Property, LLC
- Facility and method for hydrogen refrigeration3 Jun 2025US 12,320,586 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method and installation for the electrolytic production of liquid hydrogen29 Apr 2025US 12,286,712 B2Linde Aktiengesellschaft
- Method for liquefying carbon dioxide1 Oct 2026US 2026/0298531 A1
- Device for purifying and liquefying helium and associated method20 Aug 2026US 2026/0243504 A1Bruker Switzerland AG
- Carbon dioxide separation plant using external refrigeration circuit, and method13 Aug 2026US 2026/0235355 A1Nuovo Pignone Tecnologie Srl
- Low-temperature distillation method for capturing carbon dioxide11 Jun 2026US 2026/0160489 A1Shihezi University
- Method of Hydrogen Liquefaction Using Optimized Claude Refrigeration Cycles2 Apr 2026US 2026/0092734 A1Evergreen Cryogenics Inc.
Most cited
By later US patents
- Process for separating hydrocarbon compounds55US 9,133,079 B2Siluria Technologies, Inc. · 2015
- Integrated processes and systems for conversion of methane to multiple higher hydrocarbon products45US 9,598,328 B2Siluria Technologies, Inc. · 2017
- Process for separating hydrocarbon compounds44US 9,527,784 B2Siluria Technologies, Inc. · 2016
- Cryogenic pulse tube system35US 6,374,617 B1Praxair Technology, Inc. · 2002
- Helium liquefaction plant27US 4,267,701 AHelix Technology Corporation · 1981