- All sections
- H - Electricity
- H01F - Magnetsinductancestransformersselection of materials for their magnetic properties
- H01F 38/18 - Rotary transformers
Patent holdings for IPC class H01F 38/18
Total number of patents in this class: 283
10-year publication summary
|
14
|
19
|
9
|
16
|
11
|
17
|
11
|
19
|
32
|
27
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| MAHLE International GmbH | 2777 |
26 |
| Safran Electrical & Power | 685 |
20 |
| ZF Friedrichshafen AG | 7149 |
16 |
| Analogic Corporation | 312 |
11 |
| Schleifring GmbH | 69 |
8 |
| TDK Corporation | 6750 |
7 |
| Schleifring und Apparatebau GmbH | 80 |
7 |
| Robert Bosch GmbH | 42677 |
5 |
| Koninklijke Philips Electronics N.V. | 9564 |
5 |
| Hispano Suiza | 73 |
5 |
| Mitsubishi Electric Engineering Company, Limited | 185 |
5 |
| Safran Transmission Systems | 314 |
5 |
| Waymo LLC | 3115 |
5 |
| Philips Intellectual Property & Standards GmbH | 1920 |
5 |
| Siemens AG | 24461 |
4 |
| Schaeffler Technologies AG & Co. KG | 9897 |
4 |
| Labinal Power Systems | 51 |
4 |
| Safran Aircraft Engines | 6287 |
4 |
| SEW-EURODRIVE GmbH & Co. KG | 1954 |
4 |
| Apple Inc. | 55017 |
3 |
| Other owners | 130 |