- All sections
- H - Electricity
- H01F - Magnetsinductancestransformersselection of materials for their magnetic properties
- H01F 1/24 - 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 pressed, sintered, or bound together the particles being insulated
Patent holdings for IPC class H01F 1/24
Total number of patents in this class: 509
10-year publication summary
|
27
|
30
|
34
|
36
|
34
|
24
|
31
|
31
|
28
|
13
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TDK Corporation | 6884 |
46 |
| Murata Manufacturing Co., Ltd. | 25776 |
38 |
| Taiyo Yuden Co., Ltd. | 2033 |
29 |
| Hitachi Metals, Ltd. | 1896 |
27 |
| Sumitomo Electric Industries, Ltd. | 16396 |
25 |
| Höganäs AB | 300 |
23 |
| Sumitomo Electric Sintered Alloy, Ltd. | 245 |
22 |
| JFE Steel Corporation | 7562 |
17 |
| NTN Corporation | 4918 |
15 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2837 |
13 |
| Toshiba Corporation | 12577 |
12 |
| TOKIN Corporation | 216 |
12 |
| Seiko Epson Corporation | 20288 |
11 |
| Persimmon Technologies, Corp. | 163 |
10 |
| Dowa Electronics Materials Co., Ltd. | 636 |
9 |
| CTM Magnetics, Inc. | 22 |
8 |
| Samsung Electro-mechanics Co., Ltd. | 6103 |
7 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12385 |
7 |
| Panasonic Intellectual Property Management Co., Ltd. | 34080 |
6 |
| Hitachi Powdered Metals Co., Ltd. | 11 |
6 |
| Other owners | 166 |