- 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: 311
10-year publication summary
|
21
|
24
|
21
|
27
|
16
|
14
|
10
|
9
|
11
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Witricity AI Tech, LLC | 415 |
20 |
| TDK Corporation | 6833 |
9 |
| LG Innotek Co., Ltd. | 8286 |
8 |
| Toyota Motor Corporation | 35106 |
6 |
| ETO Magnetic GmbH | 281 |
6 |
| Denso Corporation | 25379 |
5 |
| Schaeffler Technologies AG & Co. KG | 10815 |
5 |
| American Axle & Manufacturing, Inc. | 637 |
5 |
| Tamura Corporation | 357 |
5 |
| Robert Bosch GmbH | 43838 |
4 |
| ABB Schweiz AG | 7519 |
4 |
| Premo S.L. | 41 |
4 |
| Hitachi Energy Ltd. | 2527 |
4 |
| Apple Inc. | 58317 |
3 |
| Qualcomm Incorporated | 91008 |
3 |
| Honeywell International Inc. | 12762 |
3 |
| National Semiconductor Corporation | 868 |
3 |
| Fractal Antenna Systems, Inc. | 56 |
3 |
| Power Integrations, Inc. | 565 |
3 |
| Saia-Burgess, Inc. | 11 |
3 |
| Other owners | 205 |