- 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: 685
10-year publication summary
|
37
|
45
|
46
|
43
|
69
|
69
|
78
|
70
|
61
|
24
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Murata Manufacturing Co., Ltd. | 22355 |
70 |
| Rogers Corporation | 445 |
34 |
| FUJIFILM Corporation | 27102 |
33 |
| TDK Corporation | 6306 |
32 |
| Skyworks Solutions, Inc. | 3450 |
29 |
| Toda Kogyo Corporation | 323 |
29 |
| Hitachi Metals, Ltd. | 2175 |
27 |
| Powdertech Co., Ltd. | 132 |
24 |
| JFE Chemical Corporation | 116 |
21 |
| Kyocera Corporation | 12735 |
16 |
| Hengdian Group Dmegc Magnetics Co., Ltd | 117 |
15 |
| LG Innotek Co., Ltd. | 6758 |
12 |
| Dowa Electronics Materials Co., Ltd. | 610 |
11 |
| JFE Steel Corporation | 6067 |
11 |
| Allumax TTI, LLC | 42 |
11 |
| Samsung Electro-mechanics Co., Ltd. | 4798 |
10 |
| Trans-tech, Inc. | 34 |
10 |
| Samsung Electronics Co., Ltd. | 131630 |
8 |
| Taiyo Yuden Co., Ltd. | 1809 |
7 |
| TDG Holding Co., Ltd. | 23 |
7 |
| Other owners | 268 |