- 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: 313
10-year publication summary
|
20
|
23
|
20
|
27
|
16
|
13
|
10
|
9
|
11
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| WiTricity Corporation | 506 |
20 |
| TDK Corporation | 6787 |
9 |
| LG Innotek Co., Ltd. | 8089 |
8 |
| ETO Magnetic GmbH | 281 |
7 |
| Toyota Motor Corporation | 34148 |
6 |
| Denso Corporation | 25062 |
5 |
| Schaeffler Technologies AG & Co. KG | 10592 |
5 |
| American Axle & Manufacturing, Inc. | 647 |
5 |
| Tamura Corporation | 355 |
5 |
| Robert Bosch GmbH | 43385 |
4 |
| ABB Schweiz AG | 7353 |
4 |
| Premo S.L. | 41 |
4 |
| Hitachi Energy Ltd. | 2418 |
4 |
| Apple Inc. | 57432 |
3 |
| Qualcomm Incorporated | 89294 |
3 |
| Honeywell International Inc. | 13583 |
3 |
| National Semiconductor Corporation | 918 |
3 |
| Fractal Antenna Systems, Inc. | 56 |
3 |
| Power Integrations, Inc. | 563 |
3 |
| Saia-Burgess, Inc. | 11 |
3 |
| Other owners | 206 |