- All sections
- H - Electricity
- H01F - Magnets; inductances; transformers; selection of materials for their magnetic properties
- H01F 27/38 - Auxiliary core members; Auxiliary coils or windings
Patent holdings for IPC class H01F 27/38
Total number of patents in this class: 421
10-year publication summary
|
40
|
35
|
30
|
61
|
55
|
34
|
34
|
33
|
30
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens Energy Global GmbH & Co. KG | 2775 |
19 |
| Murata Manufacturing Co., Ltd. | 22355 |
15 |
| Siemens AG | 24990 |
13 |
| TDK Corporation | 6306 |
13 |
| Delta Electronics, Inc. | 2401 |
9 |
| Apple Inc. | 50209 |
8 |
| Delta Electronics (Shanghai) Co., Ltd. | 611 |
8 |
| Huawei Technologies Co., Ltd. | 100781 |
7 |
| WiTricity Corporation | 514 |
7 |
| Toyota Motor Corporation | 28582 |
6 |
| Qorvo US, Inc. | 2018 |
6 |
| Delta Electronics (Thailand) Public Co., Ltd. | 76 |
5 |
| Delta Electronics (Thailand) Public Company Limited | 50 |
5 |
| Samsung Electronics Co., Ltd. | 131630 |
4 |
| Robert Bosch GmbH | 40953 |
4 |
| Mitsubishi Electric Corporation | 43934 |
4 |
| Raytheon Company | 8535 |
4 |
| Bayerische Motoren Werke Aktiengesellschaft | 13126 |
4 |
| Auckland UniServices Limited | 503 |
4 |
| FANUC Corporation | 5803 |
4 |
| Other owners | 272 |