- All sections
- H - Electricity
- H01F - Magnetsinductancestransformersselection of materials for their magnetic properties
- H01F 3/00 - Cores, yokes or armatures
Patent holdings for IPC class H01F 3/00
Total number of patents in this class: 310
10-year publication summary
|
17
|
21
|
24
|
21
|
27
|
16
|
13
|
10
|
9
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| WiTricity Corporation | 520 |
23 |
| TDK Corporation | 6674 |
7 |
| ETO Magnetic GmbH | 274 |
7 |
| Toyota Motor Corporation | 31451 |
6 |
| Denso Corporation | 24120 |
6 |
| Schaeffler Technologies AG & Co. KG | 9747 |
5 |
| American Axle & Manufacturing, Inc. | 652 |
5 |
| Tamura Corporation | 356 |
5 |
| Robert Bosch GmbH | 42450 |
4 |
| LG Innotek Co., Ltd. | 7536 |
4 |
| ABB Schweiz AG | 6887 |
4 |
| Premo S.L. | 40 |
4 |
| Hitachi Energy Ltd. | 2180 |
4 |
| Apple Inc. | 54479 |
3 |
| Qualcomm Incorporated | 84501 |
3 |
| Honeywell International Inc. | 13564 |
3 |
| National Semiconductor Corporation | 1111 |
3 |
| Fractal Antenna Systems, Inc. | 58 |
3 |
| Power Integrations, Inc. | 545 |
3 |
| Saia-Burgess, Inc. | 11 |
3 |
| Other owners | 205 |