- All sections
- H - Electricity
- H02P - Control or regulation of electric motors, electric generators or dynamo-electric converters; controlling transformers, reactors or choke coils
- H02P 9/44 - 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: 32
10-year publication summary
2
|
0
|
2
|
7
|
4
|
0
|
1
|
2
|
0
|
0
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
ABB Schweiz AG | 6321 |
3 |
Chongqing Heya Technology Co., LTD | 5 |
2 |
Generac Power Systems, Inc. | 379 |
2 |
Guangzhou Automobile Group Co., Ltd. | 295 |
2 |
Siemens AG | 24990 |
1 |
LG Electronics Inc. | 69257 |
1 |
GM Global Technology Operations LLC | 13620 |
1 |
Denso Corporation | 23338 |
1 |
Mitsubishi Electric Corporation | 43934 |
1 |
Alstom Technology Ltd | 1196 |
1 |
Yamaha Motor Electronics Co., Ltd. | 16 |
1 |
Hamilton Sundstrand Corporation | 4525 |
1 |
Beijing GoldWind Science & Creation Windpower Equipment Co., Ltd. | 332 |
1 |
Caterpillar (NI) Limited | 25 |
1 |
China Changjiang National Shipping Group Motor Factory | 3 |
1 |
Converteam Technology Ltd. | 30 |
1 |
Cummins Power Generation IP, Inc. | 261 |
1 |
GE Energy Products France SNC | 40 |
1 |
Huazhong University of Science and Technology | 930 |
1 |
Piller Group GmbH | 31 |
1 |
Other owners | 7 |