- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F03D - Wind motors
- F03D 9/17 - Combinations of wind motors with apparatus storing energy storing energy in pressurised fluids
Patent holdings for IPC class F03D 9/17
Total number of patents in this class: 127
10-year publication summary
|
2
|
13
|
21
|
26
|
34
|
5
|
11
|
21
|
19
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hydrostor Inc. | 57 |
20 |
| Kobe Steel, Ltd. | 863 |
7 |
| China Three Gorges Corporation | 162 |
5 |
| Three Gorges Group Industrial Development (Beijing) Co., Ltd | 5 |
4 |
| Quidnet Energy Inc. | 26 |
3 |
| University of Malta | 48 |
3 |
| New Leaf Management Ltd. | 4 |
3 |
| Mogens Jensen | 5 |
3 |
| Siemens Energy, Inc. | 1731 |
2 |
| Bimby Power Company, LLC. | 3 |
2 |
| Rijksuniversiteit Groningen | 283 |
2 |
| University of Virginia Patent Foundation | 1527 |
2 |
| American Exchanger Services, Inc. | 3 |
2 |
| Nguyen Chi Co., Ltd. | 36 |
2 |
| Energy Spring Ltd. | 3 |
2 |
| Australian Wind Technologies Pty Ltd | 2 |
2 |
| Reinhold Cohn and Partners | 71 |
2 |
| Sapphire Technologies, Inc. | 47 |
2 |
| Lawrence Livermore National Security, LLC | 1882 |
1 |
| Amber Kinetics, Inc. | 44 |
1 |
| Other owners | 57 |