- All sections
- H - Electricity
- H01F - Magnetsinductancestransformersselection of materials for their magnetic properties
- H01F 1/20 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
Patent holdings for IPC class H01F 1/20
Total number of patents in this class: 339
10-year publication summary
|
19
|
18
|
23
|
28
|
22
|
32
|
35
|
28
|
23
|
19
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TDK Corporation | 6910 |
38 |
| Murata Manufacturing Co., Ltd. | 25809 |
26 |
| Sumitomo Electric Industries, Ltd. | 16448 |
16 |
| Seiko Epson Corporation | 20337 |
13 |
| Sumitomo Wiring Systems, Ltd. | 11117 |
11 |
| AutoNetworks Technologies, Ltd. | 7192 |
11 |
| JFE Steel Corporation | 7589 |
11 |
| Dowa Electronics Materials Co., Ltd. | 634 |
9 |
| Hitachi Metals, Ltd. | 1826 |
8 |
| SANYO Special Steel Co., Ltd. | 249 |
8 |
| Samsung Electro-mechanics Co., Ltd. | 6126 |
7 |
| Panasonic Intellectual Property Management Co., Ltd. | 34265 |
7 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2836 |
6 |
| Resonac Corporation | 3610 |
6 |
| General Electric Company | 13915 |
5 |
| National Institute of Advanced Industrial Science and Technology | 3790 |
5 |
| Taiyo Yuden Co., Ltd. | 2038 |
5 |
| Toda Kogyo Corporation | 328 |
5 |
| 3m Innovative Properties Company | 17458 |
4 |
| Nichia Corporation | 3884 |
4 |
| Other owners | 134 |