- All sections
- H - Electricity
- H01F - Magnets; inductances; transformers; selection 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: 245
10-year publication summary
|
15
|
24
|
31
|
30
|
26
|
24
|
27
|
23
|
15
|
8
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Proterial, Ltd. | 638 |
19 |
| Hitachi Metals, Ltd. | 2175 |
15 |
| Murata Manufacturing Co., Ltd. | 22355 |
13 |
| Vacuumschmelze GmbH & Co. KG | 253 |
13 |
| Hitachi, Ltd. | 16452 |
9 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1334 |
9 |
| TDK Corporation | 6306 |
7 |
| ABB Technology AG | 1301 |
6 |
| Alps Alpine Co., Ltd. | 1831 |
6 |
| Toshiba Materials Co., Ltd. | 600 |
5 |
| Siemens AG | 24990 |
4 |
| Haihong Electric Co., Ltd. | 37 |
4 |
| Samsung Electro-mechanics Co., Ltd. | 4798 |
3 |
| LG Innotek Co., Ltd. | 6758 |
3 |
| Ferric Inc. | 51 |
3 |
| ThyssenKrupp AG | 3086 |
3 |
| ThyssenKrupp Steel Europe AG | 924 |
3 |
| U.t.t. Unique Transformer Technologies Ltd. | 7 |
3 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
3 |
| Qingdao Yunlu Advanced Materials Technology Co., Ltd. | 32 |
3 |
| Other owners | 111 |