- All sections
- H - Electricity
- H01F - Magnetsinductancestransformersselection of materials for their magnetic properties
- H01F 27/25 - Magnetic cores made from strips or ribbons
Patent holdings for IPC class H01F 27/25
Total number of patents in this class: 303
10-year publication summary
|
31
|
31
|
26
|
25
|
36
|
34
|
18
|
19
|
15
|
8
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Proterial, Ltd. | 941 |
24 |
| Murata Manufacturing Co., Ltd. | 25847 |
19 |
| Hitachi Metals, Ltd. | 1824 |
14 |
| Vacuumschmelze GmbH & Co. KG | 257 |
12 |
| TDK Corporation | 6927 |
11 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1553 |
11 |
| Hitachi, Ltd. | 16183 |
8 |
| Samsung Electro-mechanics Co., Ltd. | 6134 |
6 |
| ABB Technology AG | 1220 |
6 |
| JFE Steel Corporation | 7599 |
5 |
| Kabushiki Kaisha Riken | 306 |
5 |
| Siemens AG | 23983 |
4 |
| Sumitomo Electric Industries, Ltd. | 16331 |
4 |
| Sumitomo Wiring Systems, Ltd. | 11139 |
4 |
| AutoNetworks Technologies, Ltd. | 7211 |
4 |
| Haihong Electric Co., Ltd. | 45 |
4 |
| Toshiba Materials Co., Ltd. | 562 |
4 |
| Alps Alpine Co., Ltd. | 2323 |
4 |
| Toyota Motor Corporation | 35992 |
3 |
| Intel Corporation | 47162 |
3 |
| Other owners | 148 |