- 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: 30
10-year publication summary
|
2
|
7
|
4
|
0
|
1
|
2
|
0
|
1
|
2
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Chongqing Heya Technology Co., LTD | 4 |
2 |
| Generac Power Systems, Inc. | 391 |
2 |
| Guangzhou Automobile Group Co., Ltd. | 462 |
2 |
| Siemens AG | 24240 |
1 |
| LG Electronics Inc. | 74878 |
1 |
| GM Global Technology Operations LLC | 15753 |
1 |
| Denso Corporation | 25153 |
1 |
| Yamaha Motor Electronics Co., Ltd. | 14 |
1 |
| Hamilton Sundstrand Corporation | 5014 |
1 |
| ABB Schweiz AG | 7420 |
1 |
| Audi AG | 7458 |
1 |
| Beijing GoldWind Science & Creation Windpower Equipment Co., Ltd. | 377 |
1 |
| Caterpillar (NI) Limited | 31 |
1 |
| China Changjiang National Shipping Group Motor Factory | 3 |
1 |
| Converteam Technology Ltd. | 30 |
1 |
| Cummins Power Generation IP, Inc. | 316 |
1 |
| Huazhong University of Science and Technology | 1104 |
1 |
| Piller Group GmbH | 34 |
1 |
| Schneider Electric Solar Inverters USA, Inc. | 35 |
1 |
| Schneider Electric USA, Inc. | 1337 |
1 |
| Other owners | 7 |