- All sections
- H - Electricity
- H02P - Control or regulation of electric motors, electric generators or dynamo-electric converters; controlling transformers, reactors or choke coils
- H02P 9/42 - Arrangements for controlling electric generators for the purpose of obtaining a desired output to obtain desired frequency without varying speed of the generator
Patent holdings for IPC class H02P 9/42
Total number of patents in this class: 69
10-year publication summary
|
4
|
8
|
4
|
6
|
10
|
8
|
7
|
3
|
4
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Boeing Company | 19843 |
4 |
| Lenze Drives GmbH | 47 |
4 |
| Wobben Properties GmbH | 1207 |
4 |
| Siemens Gamesa Renewable Energy A/S | 1647 |
4 |
| Siemens AG | 24990 |
3 |
| Kohler Co. | 4165 |
3 |
| Hamilton Sundstrand Corporation | 4525 |
3 |
| Differential Dynamics Corporation | 27 |
3 |
| Acciona Windpower, S.A. | 20 |
2 |
| Generac Power Systems, Inc. | 379 |
2 |
| Schweitzer Engineering Laboratories, Inc. | 920 |
2 |
| GE Infrastructure Technology, LLC | 5873 |
2 |
| EC-Power A/S | 14 |
2 |
| Vestas Wind Systems A/S | 3459 |
2 |
| Holcomb Scientific Research Limited | 12 |
2 |
| General Electric Company | 18133 |
1 |
| Toshiba Corporation | 12017 |
1 |
| Mitsubishi Electric Corporation | 43934 |
1 |
| Alstom Technology Ltd | 1196 |
1 |
| Rolls-Royce PLC | 2944 |
1 |
| Other owners | 22 |