- All sections
- H - Electricity
- H01F - Magnets; inductances; transformers; selection of materials for their magnetic properties
- H01F 1/34 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
Patent holdings for IPC class H01F 1/34
Total number of patents in this class: 708
10-year publication summary
|
45
|
46
|
43
|
69
|
69
|
79
|
71
|
62
|
52
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Murata Manufacturing Co., Ltd. | 23702 |
71 |
| Rogers Corporation | 471 |
37 |
| FUJIFILM Corporation | 28805 |
35 |
| Toda Kogyo Corporation | 341 |
33 |
| TDK Corporation | 6539 |
31 |
| Skyworks Solutions, Inc. | 3608 |
29 |
| Hitachi Metals, Ltd. | 2021 |
25 |
| Powdertech Co., Ltd. | 137 |
25 |
| JFE Chemical Corporation | 118 |
24 |
| Hengdian Group Dmegc Magnetics Co., Ltd | 150 |
19 |
| Kyocera Corporation | 13344 |
15 |
| LG Innotek Co., Ltd. | 7242 |
14 |
| Allumax TTI, LLC | 41 |
12 |
| Dowa Electronics Materials Co., Ltd. | 621 |
11 |
| JFE Steel Corporation | 6557 |
11 |
| Samsung Electro-mechanics Co., Ltd. | 5206 |
10 |
| Trans-tech, Inc. | 32 |
10 |
| Samsung Electronics Co., Ltd. | 139001 |
8 |
| Taiyo Yuden Co., Ltd. | 1887 |
7 |
| TDG Holding Co., Ltd. | 25 |
7 |
| Other owners | 274 |