- All sections
- H - Electricity
- H02K - Dynamo-electric machines
- H02K 19/20 - Synchronous generators having windings each turn of which co-operates only with poles of one polarity, e.g. homopolar generators with variable-reluctance soft-iron rotors without winding
Patent holdings for IPC class H02K 19/20
Total number of patents in this class: 38
10-year publication summary
|
6
|
4
|
5
|
0
|
5
|
1
|
0
|
0
|
0
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 23983 |
2 |
| Rolls-Royce PLC | 3222 |
2 |
| Sintertech | 8 |
2 |
| Safran Electrical & Power | 776 |
2 |
| The Trustees for The Time being of The Kmn Fulfilment Trust | 14 |
2 |
| Toyota Motor Corporation | 35992 |
1 |
| Airbus Helicopters | 952 |
1 |
| GM Global Technology Operations LLC | 16205 |
1 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 48629 |
1 |
| ZF Friedrichshafen AG | 7270 |
1 |
| Hamilton Sundstrand Corporation | 5013 |
1 |
| Schaeffler Technologies AG & Co. KG | 11125 |
1 |
| Alfa Laval Corporate AB | 1343 |
1 |
| Bombardier Transportation GmbH | 569 |
1 |
| BorgWarner Inc. | 2581 |
1 |
| Carino Energy Renewables Ltd. | 1 |
1 |
| Controlled Power Technologies, Ltd. | 6 |
1 |
| Delty | 1 |
1 |
| Japan Aviation Electronics Industry, Limited | 1865 |
1 |
| Joy Global Longview Operations LLC | 16 |
1 |
| Other owners | 13 |