F25J 2290/44
Particular materials used
Official title: Particular materials used, e.g. copper, steel or alloys thereof or surface treatments used, e.g. enhanced surface
F25J2290/44 (Particular materials used) appears on 110 US grants and 118 published applications in this corpus.
Search patents in F25J- Granted patents
- 110
- Published applications
- 118
- Assignees
- 58
- Inventors
- 259
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 7 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 3 |
| 2002 | 4 | 1 |
| 2003 | 3 | 3 |
| 2004 | 4 | 3 |
| 2005 | 2 | 1 |
| 2006 | 1 | 5 |
| 2007 | 2 | 2 |
| 2008 | 3 | 6 |
| 2009 | 3 | 3 |
| 2010 | 1 | 11 |
| 2011 | 0 | 6 |
| 2012 | 6 | 9 |
| 2013 | 2 | 4 |
| 2014 | 4 | 4 |
| 2015 | 1 | 8 |
| 2016 | 7 | 5 |
| 2017 | 6 | 3 |
| 2018 | 3 | 11 |
| 2019 | 7 | 6 |
| 2020 | 8 | 9 |
| 2021 | 2 | 2 |
| 2022 | 3 | 6 |
| 2023 | 3 | 3 |
| 2024 | 1 | 2 |
| 2025 | 2 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Two opening Dewar with desiccant annulus3 Feb 2026US 12,540,759 B2The Government of the United States of America, as represented by the Secretary of the Navy
- Heat exchanger15 Jul 2025US 12,359,875 B2Clean Power Hydrogen Group Limited
- Fuel gas conditioning units for natural gas systems18 Feb 2025US 12,228,337 B1EOG Resources, Inc.
- Helium gas liquefier and method for liquefying helium gas23 Apr 2024US 11,965,693 B2Korea Basic Science Institute
- Advanced multi-layer active magnetic regenerator systems and processes for magnetocaloric liquefaction16 May 2023US 11,649,992 B2Battelle Memorial Institute
- Boil-off gas re-condensation device15 Jan 2026US 2026/0016224 A1Sumitomo Heavy Industries, Ltd.
- Titanium or titanium alloy heat exchanger1 May 2025US 2025/0137731 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Hydrogen liquefaction device and hydrogen liquefaction method19 Sep 2024US 2024/0310115 A1H2CREO Corp.
- Enclosure for a column for low-temperature distillation1 Feb 2024US 2024/0035746 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Two opening dewar with desiccant annulus23 Nov 2023US 2023/0375262 A1The Government of the United States of America, as represented by the Secretary of the Navy
Most cited
By later US patents
- Apparatus and method for purifying natural gas via cryogenic separation63US 6,082,133 ACryo Fuel Systems, Inc · 2000
- Apparatus for the liquefaction of natural gas and methods relating to same62US 7,219,512 B1Battelle Energy Alliance, LLC · 2007
- Heat exchanger for a fast cooldown cryostat57US 4,781,033 AAPD Cryogenics, Inc. · 1988
- Distillation process using microchannel technology56US 7,610,775 B2Velocys, Inc. · 2009
- Process for cooling a product in a heat exchanger employing microchannels55US 7,000,427 B2Velocys, Inc. · 2006