- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F03G - Spring, weight, inertia, or like motors; mechanical-power-producing devices or mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G 4/00 - Devices for producing mechanical power from geothermal energy
Patent holdings for IPC class F03G 4/00
Total number of patents in this class: 207
10-year publication summary
8
|
8
|
6
|
10
|
13
|
9
|
9
|
52
|
52
|
16
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Ice Thermal Harvesting, LLC | 68 |
34 |
Geothermal Technologies, Inc. | 12 |
6 |
Fuji Electric Co., Ltd. | 4750 |
5 |
GreenFire Energy Inc. | 16 |
5 |
Eavor Technologies Inc. | 74 |
5 |
Good Water Energy Ltd | 15 |
5 |
Halliburton Energy Services, Inc. | 20165 |
4 |
Mitsubishi Hitachi Power Systems, Ltd. | 999 |
4 |
Ormat Technologies, Inc. | 122 |
4 |
Terracoh, Inc. | 13 |
4 |
Saltkraft ApS | 11 |
4 |
Lochterra Inc. | 5 |
4 |
Sage Geosystems Inc. | 14 |
4 |
Boundary Turbines Inc | 5 |
3 |
Trindade Reservoir Services Inc. | 3 |
3 |
Roda Energy Corporation | 4 |
3 |
Mitsubishi Heavy Industries, Ltd. | 8217 |
2 |
Chevron U.S.A. Inc. | 3774 |
2 |
Dyverga Energy Corporation | 4 |
2 |
Fuji Electric Systems Co., Ltd. | 89 |
2 |
Other owners | 102 |