- 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
|
23
|
31
|
31
|
28
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TDK Corporation | 6807 |
46 |
| Murata Manufacturing Co., Ltd. | 25514 |
38 |
| Taiyo Yuden Co., Ltd. | 2014 |
29 |
| Sumitomo Electric Industries, Ltd. | 16091 |
27 |
| Hitachi Metals, Ltd. | 1921 |
27 |
| Sumitomo Electric Sintered Alloy, Ltd. | 241 |
23 |
| Höganäs AB | 300 |
22 |
| JFE Steel Corporation | 7349 |
17 |
| NTN Corporation | 4933 |
15 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2836 |
13 |
| Toshiba Corporation | 12691 |
12 |
| Seiko Epson Corporation | 20013 |
11 |
| TOKIN Corporation | 213 |
11 |
| Persimmon Technologies, Corp. | 159 |
10 |
| Dowa Electronics Materials Co., Ltd. | 636 |
9 |
| CTM Magnetics, Inc. | 23 |
8 |
| Samsung Electro-mechanics Co., Ltd. | 5860 |
7 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12507 |
7 |
| Denso Corporation | 25183 |
6 |
| Hitachi Powdered Metals Co., Ltd. | 12 |
6 |
| Other owners | 165 |