- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F24J - Production or use of heat not otherwise provided for (materials therefor C09K 5/00;engines or other mechanisms for producing mechanical power from heat, see the relevant classes, e.g. f03g for using natural heat)
- F24J 3/08 - using geothermal heat (devices for producing mechanical power from geothermal energy F03G 4/00)
Patent holdings for IPC class F24J 3/08
Total number of patents in this class: 374
10-year publication summary
79
|
39
|
50
|
18
|
3
|
2
|
1
|
0
|
0
|
0
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Rehau AG + Co | 419 |
15 |
Halliburton Energy Services, Inc. | 20165 |
8 |
Ormat Technologies, Inc. | 122 |
7 |
Hohai University | 188 |
6 |
AltaRock Energy, Inc. | 32 |
4 |
Earth to Air Systems, LLC | 15 |
4 |
Heat-Line Corporation | 32 |
4 |
Kelix Heat Transfer Systems, LLC | 9 |
4 |
Muovitech AB | 19 |
4 |
Regents of the University of Minnesota | 2620 |
4 |
A&S Umwelttechnologie AG | 4 |
4 |
Daikin Industries, Ltd. | 9495 |
3 |
Fuji Electric Co., Ltd. | 4750 |
3 |
Futurewei Technologies, Inc. | 3708 |
3 |
Blade Energy Partners, Ltd. | 8 |
3 |
Braun Intertec Geothermal, LLC | 3 |
3 |
Climatisation Par Puits Canadiens | 3 |
3 |
Geo-En Energy Technologies GmbH | 3 |
3 |
Geo-mole Limited | 6 |
3 |
Geoenergy Enterprises, LLC | 3 |
3 |
Other owners | 283 |