- All sections
- H - Electricity
- H02P - Control or regulation of electric motors, electric generators or dynamo-electric converterscontrolling transformers, reactors or choke coils
- H02P 9/44 - Control of frequency and voltage in predetermined relation, e.g. constant ratio
Patent holdings for IPC class H02P 9/44
Total number of patents in this class: 29
10-year publication summary
|
0
|
2
|
7
|
4
|
0
|
1
|
2
|
0
|
0
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Chongqing Heya Technology Co., LTD | 5 |
2 |
| Generac Power Systems, Inc. | 374 |
2 |
| Guangzhou Automobile Group Co., Ltd. | 417 |
2 |
| Siemens AG | 24421 |
1 |
| LG Electronics Inc. | 73476 |
1 |
| GM Global Technology Operations LLC | 15133 |
1 |
| Denso Corporation | 24404 |
1 |
| Yamaha Motor Electronics Co., Ltd. | 14 |
1 |
| Hamilton Sundstrand Corporation | 4906 |
1 |
| ABB Schweiz AG | 7023 |
1 |
| Beijing GoldWind Science & Creation Windpower Equipment Co., Ltd. | 368 |
1 |
| Caterpillar (NI) Limited | 30 |
1 |
| China Changjiang National Shipping Group Motor Factory | 3 |
1 |
| Converteam Technology Ltd. | 30 |
1 |
| Cummins Power Generation IP, Inc. | 297 |
1 |
| Huazhong University of Science and Technology | 1063 |
1 |
| Piller Group GmbH | 34 |
1 |
| Schneider Electric Solar Inverters USA, Inc. | 37 |
1 |
| Schneider Electric USA, Inc. | 1290 |
1 |
| GE Infrastructure Technology, LLC | 6247 |
1 |
| Other owners | 6 |