F25J 3/0685
Separation of noble gases
Official title: {separation of noble gases (from air F25J3/04642; in general C01B23/00)}
F25J3/0685 (Separation of noble gases) appears on 49 US grants and 39 published applications in this corpus.
Search patents in F25J- Granted patents
- 49
- Published applications
- 39
- Assignees
- 34
- Inventors
- 133
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 2 |
| 2004 | 2 | 3 |
| 2005 | 0 | 2 |
| 2006 | 1 | 2 |
| 2007 | 3 | 2 |
| 2008 | 2 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 2 | 2 |
| 2015 | 0 | 1 |
| 2016 | 0 | 3 |
| 2017 | 3 | 1 |
| 2018 | 1 | 4 |
| 2019 | 3 | 0 |
| 2020 | 1 | 3 |
| 2021 | 2 | 1 |
| 2022 | 0 | 2 |
| 2023 | 1 | 3 |
| 2024 | 1 | 2 |
| 2025 | 7 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cryo-collection systems and related methods and hyperpolarizer systems22 Sep 2026US 12,742,592 B2Polarean, Inc.
- Cryogenic process for crude helium recovery from natural gas12 May 2026US 12,623,905 B2Council of Scientific and Industrial Research
- Particle repelling arrangement25 Nov 2025US 12,478,980 B1Lunar Helium-3 Mining, LLC
- Electrostatic filtration arrangement7 Oct 2025US 12,434,251 B1Lunar Helium-3 Mining, LLC
- Progressively chilled gas separation tanks2 Sep 2025US 12,405,056 B1Lunar Helium-3 Mining, LLC
- Gas collection chamber with adsorber26 Feb 2026US 2026/0054270 A1Lunar Helium-3 Mining, LLC
- Systems and methods for production of xenon-13314 Aug 2025US 2025/0256962 A1Curium US LLC
- Cryo-collection systems, related methods and hyperpolarizers with the cryo-collection systems15 Aug 2024US 2024/0271866 A1Polarean, Inc.
- Cryo-collection systems and related methods and hyperpolarizer systems15 Aug 2024US 2024/0271867 A1Polarean, Inc.
- Cryogenic process for crude helium recovery from natural gas7 Dec 2023US 2023/0391621 A1Council of Scientific and Industrial Research
Most cited
By later US patents
- Process for recovering hydrogen from a multi-component gas stream113US 4,654,063 AAir Products and Chemicals, Inc. · 1987
- Integrated processing of natural gas into liquid products87US 6,743,829 B2BP Corporation North America Inc. · 2004
- Integrated processing of natural gas into liquid products84US 7,168,265 B2BP Corporation North America Inc. · 2007
- Cryogenic accumulator for spin-polarized xenon-12972US 5,809,801 AThe Trustees of Princeton University · 1998
- Apparatus for controlling the composition of a laser gas or gas mixture62US 5,090,020 ABritish Aerospace Public Limited Company · 1992