- All sections
- H - Electricity
- H01F - Magnetsinductancestransformersselection of materials for their magnetic properties
- H01F 1/33 - 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 mixtures of metallic and non-metallic particlesMagnets 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 metallic particles having oxide skin
Patent holdings for IPC class H01F 1/33
Total number of patents in this class: 276
10-year publication summary
|
14
|
10
|
17
|
32
|
23
|
21
|
9
|
18
|
18
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Taiyo Yuden Co., Ltd. | 1928 |
30 |
| TDK Corporation | 6702 |
22 |
| Hitachi Metals, Ltd. | 1985 |
18 |
| Murata Manufacturing Co., Ltd. | 24444 |
17 |
| Samsung Electro-mechanics Co., Ltd. | 5593 |
9 |
| Sumitomo Electric Industries, Ltd. | 15414 |
8 |
| Panasonic Intellectual Property Management Co., Ltd. | 31201 |
8 |
| National Institute of Advanced Industrial Science and Technology | 3795 |
8 |
| Seiko Epson Corporation | 19316 |
7 |
| Dowa Electronics Materials Co., Ltd. | 633 |
7 |
| Diamet Corporation | 92 |
6 |
| Toyota Motor Corporation | 31764 |
5 |
| Toshiba Corporation | 12317 |
5 |
| Höganäs AB | 308 |
5 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12837 |
5 |
| BASF SE | 20892 |
4 |
| Panasonic Corporation | 20142 |
4 |
| Persimmon Technologies, Corp. | 149 |
4 |
| Sumitomo Electric Sintered Alloy, Ltd. | 227 |
4 |
| Toda Kogyo Corporation | 339 |
4 |
| Other owners | 96 |