- All sections
- H - Electricity
- H01F - Magnetsinductancestransformersselection of materials for their magnetic properties
- H01F 3/08 - Cores, yokes or armatures made from powder
Patent holdings for IPC class H01F 3/08
Total number of patents in this class: 474
10-year publication summary
|
32
|
40
|
54
|
28
|
37
|
17
|
29
|
32
|
39
|
11
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TDK Corporation | 6813 |
54 |
| Sumitomo Electric Industries, Ltd. | 16113 |
25 |
| Seiko Epson Corporation | 20017 |
22 |
| Murata Manufacturing Co., Ltd. | 25552 |
16 |
| Sumitomo Electric Sintered Alloy, Ltd. | 241 |
14 |
| Panasonic Intellectual Property Management Co., Ltd. | 33602 |
13 |
| Sumitomo Wiring Systems, Ltd. | 10788 |
13 |
| AutoNetworks Technologies, Ltd. | 6941 |
13 |
| Hitachi Metals, Ltd. | 1921 |
11 |
| Samsung Electro-mechanics Co., Ltd. | 5875 |
9 |
| Höganäs AB | 300 |
8 |
| JFE Steel Corporation | 7362 |
8 |
| Taiyo Yuden Co., Ltd. | 2016 |
8 |
| TOKIN Corporation | 213 |
8 |
| LG Innotek Co., Ltd. | 8200 |
7 |
| Sumida Corporation | 332 |
7 |
| Delta Electronics (Japan), Inc. | 45 |
7 |
| Toyota Motor Corporation | 34698 |
6 |
| Robert Bosch GmbH | 43631 |
6 |
| Cyntec Co., Ltd. | 271 |
6 |
| Other owners | 213 |