F24T 10/40
Operated without external energy sources
Official title: operated without external energy sources, e.g. using thermosiphonic circulation or heat pipes
F24T10/40 (Operated without external energy sources) appears on 81 US grants and 82 published applications in this corpus.
Search patents in F24T- Granted patents
- 81
- Published applications
- 82
- Assignees
- 58
- Inventors
- 204
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 6 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 3 |
| 2005 | 0 | 0 |
| 2006 | 2 | 0 |
| 2007 | 1 | 3 |
| 2008 | 0 | 3 |
| 2009 | 0 | 4 |
| 2010 | 2 | 3 |
| 2011 | 0 | 2 |
| 2012 | 1 | 4 |
| 2013 | 1 | 3 |
| 2014 | 3 | 4 |
| 2015 | 2 | 4 |
| 2016 | 3 | 3 |
| 2017 | 3 | 3 |
| 2018 | 2 | 3 |
| 2019 | 2 | 1 |
| 2020 | 0 | 9 |
| 2021 | 5 | 4 |
| 2022 | 5 | 0 |
| 2023 | 3 | 13 |
| 2024 | 2 | 3 |
| 2025 | 8 | 5 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and methods for enhanced thermal syphoning8 Sep 2026US 12,729,884 B2Good Water Energy Ltd.
- Multi-well geothermal syphoning system21 Apr 2026US 12,607,386 B2Good Water Energy Ltd.
- Extendable conductor for thermal management10 Mar 2026US 12,571,594 B2Lunar Outpost Inc.
- Geothermal heat extractor2 Dec 2025US 12,487,010 B2Jtec Energy, Inc.
- Generating geothermal energy using multiple working fluids18 Nov 2025US 12,474,089 B2Eavor Technologies Inc.
- A geothermal hydrogen production and compression system20 Aug 2026US 2026/0242246 A1Good Water Energy Ltd.
- Geothermal cooling system13 Aug 2026US 2026/0235328 A1Solution Energy Technology, Inc.
- Geothermal cooling system4 Jun 2026US 2026/0153273 A1Solution Energy Pty Ltd
- Multi-well geothermal syphoning system7 May 2026US 2026/0126217 A1Good Water Energy Ltd.
- Heat-release retardative cold conduction device with multi-cavity and multi-phase change and method of calculating transfer heat thereof8 Jan 2026US 2026/0009562 A1Cccc First Highway Consultants Co., Ltd.
Most cited
By later US patents
- Heat pipe bag system52US 4,279,294 AUnited Technologies Corporation · 1981
- Geothermal heat recovery system51US 4,094,356 A1978
- Flowing geothermal wells and heat recovery systems45US 4,364,232 A1982
- Earth-embedded, temperature-stabilized heat exchanger35US 4,327,560 A1982
- Heat recovery systems27US 4,644,750 AEnergy Soft Computer Systems Limited · 1987