- All sections
- H - Electricity
- H01F - Magnets; inductances; transformers; selection 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: 401
10-year publication summary
|
35
|
30
|
32
|
40
|
54
|
28
|
35
|
14
|
27
|
11
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TDK Corporation | 6306 |
43 |
| Sumitomo Electric Industries, Ltd. | 14131 |
22 |
| Seiko Epson Corporation | 18724 |
17 |
| Murata Manufacturing Co., Ltd. | 22355 |
15 |
| Hitachi Metals, Ltd. | 2175 |
12 |
| Sumitomo Wiring Systems, Ltd. | 9367 |
11 |
| AutoNetworks Technologies, Ltd. | 5809 |
11 |
| Sumitomo Electric Sintered Alloy, Ltd. | 214 |
11 |
| TOKIN Corporation | 199 |
8 |
| Höganäs AB | 337 |
7 |
| Sumida Corporation | 291 |
7 |
| Taiyo Yuden Co., Ltd. | 1809 |
7 |
| Alps Alpine Co., Ltd. | 1831 |
7 |
| Toyota Motor Corporation | 28582 |
6 |
| Robert Bosch GmbH | 40953 |
6 |
| Samsung Electro-mechanics Co., Ltd. | 4798 |
6 |
| LG Innotek Co., Ltd. | 6758 |
6 |
| Cyntec Co., Ltd. | 232 |
6 |
| JFE Steel Corporation | 6067 |
6 |
| Denso Corporation | 23338 |
5 |
| Other owners | 182 |