F25J 3/029
Of helium
Official title: {of helium}
F25J3/029 (Of helium) appears on 84 US grants and 72 published applications in this corpus.
Search patents in F25J- Granted patents
- 84
- Published applications
- 72
- Assignees
- 37
- Inventors
- 195
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 3 |
| 2007 | 2 | 3 |
| 2008 | 2 | 11 |
| 2009 | 2 | 3 |
| 2010 | 1 | 2 |
| 2011 | 6 | 3 |
| 2012 | 1 | 2 |
| 2013 | 4 | 2 |
| 2014 | 5 | 2 |
| 2015 | 0 | 1 |
| 2016 | 1 | 2 |
| 2017 | 3 | 4 |
| 2018 | 1 | 8 |
| 2019 | 3 | 1 |
| 2020 | 2 | 5 |
| 2021 | 2 | 4 |
| 2022 | 3 | 1 |
| 2023 | 2 | 4 |
| 2024 | 0 | 2 |
| 2025 | 2 | 2 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System for purifying helium gas, method, and application28 Jul 2026US 12,693,071 B2Changqing Engineering Design Co., Ltd.
- Cryogenic process for crude helium recovery from natural gas12 May 2026US 12,623,905 B2Council of Scientific and Industrial Research
- Gas purification method and device13 May 2025US 12,297,107 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Cryogen chamber with adsorber7 Jan 2025US 12,186,699 B1Lunar Helium-3 Mining, LLC
- Single column nitrogen rejection unit with side draw heat pump reflux system and method27 Jun 2023US 11,686,528 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
- Single Column Nitrogen Rejection Unit20 Aug 2026US 2026/0243507 A1Chart Energy & Chemicals, Inc.
- Process for dehydration of a gas stream prior to cryogenic co2 fractionation7 May 2026US 2026/0126246 A1Uop LLC
- System for purifying helium gas, method, and application20 Feb 2025US 2025/0060157 A1Changqing Engineering Design Co., Ltd.
- Cryogenic Neon Purification System and Method2 Jan 2025US 2025/0003677 A1Chart Energy & Chemicals, Inc.
Most cited
By later US patents
- Absorption process without external solvent97US 5,462,583 AAdvanced Extraction Technologies, Inc. · 1995
- 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
- Process for recovering helium from a multi-component gas stream77US 4,717,407 AAir Products and Chemicals, Inc. · 1988
- Method of separating acid gases, particularly carbon dioxide, from methane by the addition of a light gas such as helium75US 4,511,382 AExxon Production Research Company · 1985