- 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: 323
10-year publication summary
|
30
|
19
|
18
|
23
|
28
|
22
|
31
|
35
|
26
|
10
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TDK Corporation | 6667 |
36 |
| Murata Manufacturing Co., Ltd. | 24302 |
23 |
| Sumitomo Electric Industries, Ltd. | 15321 |
19 |
| Seiko Epson Corporation | 19261 |
11 |
| Sumitomo Wiring Systems, Ltd. | 10247 |
11 |
| AutoNetworks Technologies, Ltd. | 6506 |
10 |
| JFE Steel Corporation | 6751 |
9 |
| Hitachi Metals, Ltd. | 1990 |
8 |
| Dowa Electronics Materials Co., Ltd. | 632 |
8 |
| SANYO Special Steel Co., Ltd. | 218 |
8 |
| Samsung Electro-mechanics Co., Ltd. | 5498 |
6 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2873 |
6 |
| Toda Kogyo Corporation | 338 |
6 |
| National Institute of Advanced Industrial Science and Technology | 3784 |
5 |
| Taiyo Yuden Co., Ltd. | 1917 |
5 |
| 3m Innovative Properties Company | 17842 |
4 |
| Panasonic Intellectual Property Management Co., Ltd. | 30903 |
4 |
| General Electric Company | 13823 |
3 |
| Intel Corporation | 46678 |
3 |
| Hitachi, Ltd. | 15416 |
3 |
| Other owners | 135 |