- All sections
- H - Electricity
- H02P - Control or regulation of electric motors, electric generators or dynamo-electric converterscontrolling transformers, reactors or choke coils
- H02P 9/38 - Self-excitation by current derived from rectification of both output voltage and output current of generator
Patent holdings for IPC class H02P 9/38
Total number of patents in this class: 14
10-year publication summary
|
3
|
4
|
2
|
1
|
0
|
1
|
2
|
1
|
2
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Cummins Generator Technologies Limited | 115 |
2 |
| Deere & Company | 7767 |
1 |
| Hitachi, Ltd. | 15712 |
1 |
| Denso Corporation | 24797 |
1 |
| Rolls-Royce PLC | 3159 |
1 |
| Hamilton Sundstrand Corporation | 4956 |
1 |
| BRUSA Elektronik AG | 121 |
1 |
| Generac Power Systems, Inc. | 377 |
1 |
| Hitachi Mitsubishi Hydro Corporation | 35 |
1 |
| Genrh8 Limited | 1 |
1 |
| State Grid Zhejiang Electric Power Co., Ltd. Research Institute | 7 |
1 |
| Phinia Technologies Inc. | 81 |
1 |
| Brusa Technology AG | 12 |
1 |
| Other owners | 0 |